the positive effects of light
DUO is a revolutionary range of luminaires from Whitecroft Lighting which has been designed to have a positive effect...
….On the Space Choosing the right luminaire for any space is a subjective process where appearance is
…On the People
paramount. DUO has been
DUO has been designed to
designed to integrate and
not only maximise the visual
harmonise with the
aspects of the lit
aesthetics of a modern office
environment, but also
environment and provide
address our emotional and
soft, even illumination of all
biological requirements. In
Because DUO has a positive
surfaces.
doing this it creates a more
effect on both the space and
motivating and comfortable
the staff who work within
workplace.
that space, businesses can
…On the Business
reap the benefits of a more effective workforce.
DUO represents a significant step forward in luminaire design. It combines flexibility and performance whilst recognising the aesthetic impact it has on it’s surroundings.
Martin Valentine Lighting Group Director Faber Maunsell Ltd
DUO
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A P O S I T I V E E F F E C T O N T H E S PA C E
Creating a Pure Aesthetic Simplicity of Form DUO’s simple form is crucial
Effective Room Surface Illumination
A Choice of Design Aesthetic There are two distinct
in achieving aesthetic
DUO uses complex optical
configurations in the DUO
integration. The modern
control technologies to
range, centre and perimeter
office is filled with geometric
deliver bright, diffuse light to
optic versions.
forms and is essentially
both walls and ceiling.
simple in design. Why use a
Furthermore, its unique
luminaire which introduces
design introduces controlled
visual confusion into this
brightness zones directly into
space?
the ceiling plane. This
A Clean Ceiling Line
delivers a vibrant lit
The centre optic has an aesthetic similar to traditional luminaires, with the main lighting optic running along the central axis of the luminaire.
workplace and enhances the Research amongst leading
room surfaces in excess of
architects and specifiers has
those demanded by LG7.
The side optic version takes a more radical approach and
shown a strong desire for
positions two optics at
clean, undisturbed ceiling
opposing edges of the
lines. DUO meets this
luminaire, not only improving
requirement by being both
efficiency but giving a unique
fully recessed and of
visual appearance.
geometric form. Its unique dual optic design adds brightness to the space and integrates well into the ceiling plane.
The combination of optical technology and simple design mean that DUO transforms the visual appearance of the workplace, creating the right light for the space.
DUO creates a pure aesthetic in harmony with other key building elements, ensuring total integration within the space
DUO
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A POSITIVE EFFECT ON THE PEOPLE
Achieving Exceptional Lighting Quality How We Respond to Light
The Visual Response
The Emotional Response
The Biological Response
There are three ways in
Our primary response to the
Our second response is
Our final response is
which we respond to light,
lit environment is visual. We
more subjective. A space
subconscious. Our body
and each of these has a part
assess whether the
may comply with all of our
responds to changes in light,
to play in creating a lit
environment is lit well
visual needs but emotionally
we are naturally conditioned
environment which will
enough to perform the
we also respond to the
to a daylight environment.
engender a feeling of well
required task by responding
appearance of the
Brightly lit spaces with
being in its users. These are
to levels of illuminance, glare
environment. A bright, well
daylight balanced lamps in
Visual, Emotional and
and contrast. These three
integrated and vibrant interior
luminaires can have a
Biological.
elements determine the
is motivating and makes us
dramatic effect on the
visual quality of the lit
feel good about the space
surroundings, making them
environment.
we work in.
feel much more natural and comfortable. Current academic research shows that we are stimulated by changes in light intensity and colour, both having a positive effect on our alertness and general well
Visual
Emotional Well Being
being. DUO is available with integrated bio-dynamic lighting which changes colour temperature and intensity during the working day to
Biological
stimulate our biological response to light.
DUO achieves an exceptional quality of illumination providing a comfortable, motivating workplace
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DUO
A POSITIVE EFFECT ON THE BUSINESS
Delivering Proven Benefits 1:5:200
Increasing Productivity The report introduces the
Given the value of the
an exceptional quality of light
1:5:200 rule which
investment in staff, any
and enhances the working
demonstrates that for every
increase in productivity is a
Because DUO delivers both
environment, businesses can
pound spent on the
benefit that more than
benefit from the outcomes of
construction of a building,
outweighs the initial
these environmental
five pounds is spent on
investment.
enhancements.
maintaining and operating
An analysis titled ‘The Long Term Costs of Owning and Using Buildings’ by The Royal
the building and two hundred pounds on the staff who occupy the building.
Academy of Engineering is
The rewards from improving the working environment and creating a more motivating workplace by choosing DUO can be reaped in many ways.
widely quoted by the UK
A well lit workplace can lead
construction industry.
to lower absenteeism, a more stable workforce and a
The Long Term Costs of Owning and Using Buildings
marked increase in productivity.
£1
Construction Cost
£5
Facilities Management
£200 Staff Expenditure
DUO delivers an effective lit environment promoting well being and enhancing productivity in the workplace
Sustainability A truly sustainable lighting
combining low energy lamps
We are committed to
solution has to consider more
with sophisticated optical
reducing the impact of
than just the luminaire.
technology. When DUO is
lighting on the environment
Energy saving controls, gear
combined with our lighting
and have developed our
and lamp type all contribute
control systems we can
environmental policies in
towards the overall cost
further reduce life cycle
conjunction with the Carbon
throughout a scheme’s life.
cost which benefit both
Trust.
DUO is designed to maximise light output by
the environment and the end user.
A HOLISTIC APPROACH TO OFFICE LIGHTING
A successful lighting scheme
The Seven Key Criteria
must deliver on many fronts. It must not only consider the requirements defined in AESTHETIC INTEGRATION
lighting standards, but balance these with both through life costs and the qualitative aspects of lighting
CONTROLLED CONTRAST
ENERGY CONSUMPTION
quality and architectural integration. Assessing Success By using a spider diagram such as the one pictured opposite, a graphic representation of the
ROOM SURFACE ILLUMINATION
MAINTENANCE COST
performance of a scheme can be obtained. This simple tool allows the lighting designer to compare and INSTALLED COST
optimise different solutions at the earliest design stage. These seven key criteria have driven the development of DUO to create the optimum lighting solution for any workplace.
AESTHETIC INTEGRATION is a
ENERGY CONSUMPTION
subjective judgement as to
quantifies the amount of
how well the lighting
energy, and its associated
integrates into it’s
cost, that the luminaire
surroundings.
consumes over its lifetime.
CONTROLLED CONTRAST rates
MAINTENANCE COST
how comfortable a finished
measures how much the
scheme feels to the user.
luminaire costs to maintain
ROOM SURFACE ILLUMINATION compares the amount of
both in parts and labour over its lifetime.
light on the working plane
These two factors enable you
with the illumination of both
to measure the through life
walls and ceilings.
cost of a lighting solution.
GLARE CONTROL is a measure
INSTALLED COST is a
of how well both direct and
combination of both
indirect glare are managed.
luminaire price and
An understanding of these four factors gives an overall balance of lighting quality.
installation cost.
GLARE CONTROL
THE DUO RANGE
D U O - D u a l O p t i c Te c h n o l o g y The DUO luminaire range has
These optical cells are
If lower luminance levels are
two distinct optical elements
available with a choice of 3
required a choice of two
which are common
controllers. The Micro Prism
louvres are available, a ‘living’
throughout the range.
optic delivers exceptional
louvre which builds on our
controlled contrast with
unique Vivant louvre
higher luminance and has the
technology to create visual
unique ability to be used in
interest and a conventional
either it’s recessed position
semi-specular louvre. Both
for maximum ceiling
offer excellent glare control.
DUO employs intermediate brightness zones (IBZ), which deliver diffuse light and inject brightness directly into the ceiling plane. These work in conjunction with optical cells which deliver controlled light, maximising efficiency and reducing glare.
integration or dropped to allow it’s linear refractor optics to further enhance the lighting of the ceiling plane.
Luminaire Aesthetics As well as offering a choice
Two sizes of luminaire are
All DUO luminaires have air
of optical arrangements, DUO
available to integrate into
handling capability as
allows for two distinct
both 600mm2 and 1200mm x
standard; a carefully
aesthetic options. The DUO
300mm suspended ceiling
considered design feature
centre optic range combines
systems.
which eliminates the need
a familiar design style with
for unsightly extraction vents
high performance, whilst the
in the ceiling plane. DUO has
DUO side optic range
an air handling capacity of
maximises performance and
between 20 and 40 litres per
has been designed to offer
second depending on its
the ultimate aesthetic
optical configuration.
integration.
THE DUO EFFECT
DUO Micro Optic Side Cells Raised
DUO Micro Optic Side Cells Lowered
DUO Living Louvre Centre Cell
DUO Semi Specular Louvre Side Cells
DUO
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C R E AT I N G C O M F O R T
The Direct View The traditional measurement
has been virtually eliminated.
Although we generally do not
of glare of a luminaire is
Today’s monitors have a
look directly at a luminaire
defined at 65° of elevation.
brightness of between 200-
from a 30° angle, we are
This measurement method
300cd/m2 and can cope with
aware of the brightness and
was developed to imitate the
luminaire brightnesses in
will make a subconscious
reflectance of a luminaire in a
excess of 2,000-3,000cd/m
computer screen which was
without causing discomfort.
of discomfort this causes.
We should perhaps assess
DUO is offered with a range
the modern luminaire in
of luminance limits and
degrees of comfort rather
employs Intermediate
than glare. With normal
Brightness Zones to reduce
ceiling heights luminaires
sudden changes in
enter our field of vision at a
brightness across the
far lower angle of incidence.
ceiling plane.
the foremost cause of glare and discomfort. These luminance limits were based on screens with a brightness of only 20-50cd/m2. Computer screen technology has evolved to the point that
2
reflected glare from screens
65°
30°
Reflected glare
Direct brightness
Understanding Brightness The primary objective in
background is reduced,
creating a comfortable
resulting in a more
lighting scheme is to avoid
comfortable field of view. It
sudden changes in
is the sudden change in
brightness. By illuminating
brightness, rather than the
the area surrounding the light
actual luminance level, which
source the differential
makes the environment
between object and
uncomfortable.
The car headlights above are both the same brightness. However, the one on the darker background appears more vivid because of the contrast between object and background.
judgement as to the degree
Intermediate Brightness Zones DUO employs Intermediate
brightness helps the human
Brightness Zone (IBZ)
eye adapt to the differing
technology to create a
brightnesses within the field
graduated brightness
of view, much like the ‘car
between the high intensity of
headlights during the day’
a light source and the
principle opposite.
relatively low luminance of the ceiling. The complex
The controlled contrast delivered by the IBZ within
structure of the IBZ
the DUO optic creates
polycarbonate material
exceptional levels of comfort
produces a highly diffuse
whilst enhancing the
light with constant
percieved brightness of the
brightness from all angles of
ceiling.
view. This intermediate
DUO brightness levels 1,500cd/m2 ave.
30cd/m2 ave.
9,000cd/m2 peak Louvres brightness levels 22,000cd/m2 peak
30cd/m2 ave.
The contrast between luminaire and ceiling is lessened by the IBZ, allowing the human eye to adapt to a more comfortable view.
Creating a Brighter Ceiling Percieved brightness as
brightness levels, DUO’s
registered by the human eye
IBZ’s have been specifically
differs greatly from that
designed to optimise visual
measured by a light meter.
comfort. Because these are
Peak intensities, as can occur
not obstructed in any view,
with T5 lamps in louvred
they have a uniform
optics, can cause severe
brightness from all angles.
discomfort.
The eye registers the
DUO’s unique IBZ technology diffuses brightness across the entire optic eliminating visual discomfort whilst greatly contributing to the percieved ceiling brigtness. Unlike semi-recessed luminaires traditionally used to achieve LG7 ceiling
contribution of the luminaire to ceiling brightness levels while sensing no discomfort from peak intensities. DUO therefore delivers a ceiling brightness well above the room surface illuminance ratios demanded by LG7:2005.
DUO
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OPTICAL TECHNOLOGY
Micro Prism technology A vital element in DUO’s ground breaking optical
U.V. resistant coating
technology is the use of microscopic conical and linear prisms in the main optical cell. The conical prisms on the under-surface of the cell direct light towards the working plane whilst the linear micro prisms direct light back towards the ceiling plane when the optic is in its lowered position. This reduces light output in
Conical Prisms
Linear Prisms
areas which may cause discomfort. DUO’s micro prisms deliver enhanced
The entire polycarbonate cell has a U.V. resistant coating to ensure optical efficiency throughout the life of the luminaire.
ceiling illumination when the optic is in the lowered position.
Micro Polymer Intermediate Brightness Zones At the heart of DUO lies the
This microstructure refracts
unique Micro Polymer Optical
light to such an extent that it
technology. Duo IBZ’s are
appears translucent and
manufactured from a
delivers an extremely diffuse
complex polycarbonate
effect.
material which combines microscopic pearls of opal thermoplastic elements in a clear base, resulting in excellent light transmission.
This differs dramatically from traditional diffuser materials which are completely opal, resulting in extremely poor
DUO Micro Polymer Optics
Traditional opal diffusers significantly
light transmission.
diffuse light with only a small
reduce light transmission
reduction in light transmission
Micro–film reflector technology DUO’s optical cell is also
DUO can also be specified
available with a ‘living’ louvre.
with a semi-specular
This unique louvre
aluminium louvre. This high
technology, first used in our
quality material is coated
Vivant luminaire, creates
with a microscopic film of
visual interest and gives a
pure aluminium which
different appearance to the
achieves maximum
luminaire.
reflectivity and an iridescent
The louvre has a unique shimmering metallised finish which injects life into the ceiling plane.
free appearance.
BIO -DYNAMIC LIGHTING
Creating the Right Appearance DUO has been designed to
The colour temperature of
provide motivating,
lamps used in the DUO
interesting and comfortable
range can be tailored to
spaces. The choice of colour
determine the effect the
temperature of the lamps
lighting has on its
used in DUO can have a
surroundings. A warm colour
dramatic impact on the
temperature can have a
appearance of the space.
relaxing effect, whilst a
Furthermore, research has
cooler colour temperature
shown that colour
will aid concentration.
temperature has a direct biological effect on the
The use of 6500k daylight balanced lamps is becoming
occupants of the workspace.
more popular in the workplace, as their cool appearance creates a bright space with a more natural outdoor feel.
B i o - D y n a m i c L i g h t i n g Te c h n o l o g y Lux
DUO is available with Bio-
both colour temperature and
Dynamic Lighting which
lighting level.
enables a continual subtle
600
change in both the colour temperature and intensity of 400
the lighting during the working day. This specially developed control system is
08.00
10.00
12.00
14.00
16.00
18.00
hrs
programmed to a unique algorithm which optimises
This will counteract the body’s natural tendency to be less alert at certain parts of the day, resulting in an improvement not only in performance, but in the wellbeing of users.
Understanding the Biological Effects of Light To further influence the effect that lighting has on people, it
Circadian Rhythm - the body’s natural cycle of alertness
is important to understand the relationship between light and the body’s alertness. Light is not just image forming. The human body responds to changes in light intensity and colour resulting in different levels of alertness throughout the day. Two chemicals, Cortisol and
6
Melatonin, are produced by
12
18
24
6
12
18
the body and these control Alertness
our alertness levels. This is
Melatonin
Cortisol
called the Circadian Rhythm. Melatonin is a sleep hormone
artificial lighting can increase
temperature and light
and Cortisol promotes
alertness and contribute to a
intensity within a workspace
alertness. Over a 24 hour
feeling of well-being.
during the day to promote
period these combine to create our natural rhythm of sleeping and waking hours. This rhythm is regulated by natural changes in light. Research has proved that varying the intensity and colour temperature of
When looked at in more detail, the body experiences peaks and troughs of alertness during the day. Artificial lighting can be used to counteract these dips by altering the colour
awareness at times when Melatonin (sleep hormone) is naturally increasing in the body. This technique creates a more productive and stimulating working environment.
DUO’s Bio Dynamic Lighting system gradually varies both lighting intensity and colour temperature throughout the working day to create the optimum working environment
24
6
DUO
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ADDING DRAMA
Duo Colour DUO can be used for more
The LED element is
than functional lighting. It is
contained within the body of
available with built-in LED
the luminaire and consumes
elements which can be used
only 9W of power, giving the
to create a number of
designer the opportunity to
dramatic effects.
significantly reduce energy
For any prestigious project, the building’s night-time appearance is an important
consumption when compared to a conventional floodlighting scheme.
factor. Until now this has
DUO Colour can be used for
been achieved with external
a number of applications as
luminaires which are both
well as building floodlighting.
costly to install and run. DUO
Reception areas can be
can incorporate coloured LED
illuminated in corporate
elements which can be used
colours, whilst using DUO
to ‘floodlight’ the building
Colour in stairwells and
from inside creating a
lift lobbies could aid
dramatic visual statement.
navigation or enhance architectural features.
T E C H N I C A L D ATA
Photometric Data DUO Side Cell Recessed
DUO Side Cell Recessed
DUO Side Cell Recessed
MICRO OPTIC 4 x 14W T5
LIVING LOUVRE 4 x 14W T5
SEMI-SPECULAR LOUVRE 4 x 14W T5
o
• 65 Max*= 2208 (3285)cd/m2 • LOR*= 62.0 (66.7)%
o
o
• 65 Max = 1934cd/m2
• SHR MAX = 1.53
200
• 65 Max = 1363cd/m2 300
• LOR = 68.2%
350
• LOR = 64.1%
• SHR MAX = 1.73
• SHR MAX = 1.30
UTILISATION FACTORS UF(F) SHR NOM 1.50 Room Reflectance Room Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . W F 0.75 1.00 1.25 1.50 2.00 2.50 3.00 4.00 5.00 C 0.70 0.50 0.20 0.40 0.45 0.49 0.52 0.56 0.59 0.61 0.63 0.65 0.50 0.30 0.20 0.35 0.40 0.44 0.47 0.53 0.54 0.56 0.59 0.61 0.00 0.00 0.00 0.31 0.35 0.39 0.42 0.46 0.48 0.50 0.53 0.55
SHR NOM 1.50 UTILISATION FACTORS UF(F) Room Reflectance Room Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C W F 0.75 1.00 1.25 1.50 2.00 2.50 3.00 4.00 5.00 0.70 0.50 0.20 0.47 0.52 0.57 0.60 0.64 0.67 0.69 0.71 0.73 0.50 0.30 0.20 0.42 0.47 0.52 0.55 0.59 0.62 0.64 0.67 0.68 0.00 0.00 0.00 0.37 0.42 0.46 0.49 0.53 0.59 0.58 0.60 0.62
SHR NOM 1.25 UTILISATION FACTORS UF(F) Room Reflectance Room Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C W F 0.75 1.00 1.25 1.50 2.00 2.50 3.00 4.00 5.00 0.70 0.50 0.20 0.44 0.50 0.54 0.57 0.61 0.63 0.65 0.67 0.68 0.50 0.30 0.20 0.39 0.42 0.49 0.52 0.56 0.59 0.60 0.63 0.64 0.00 0.00 0.00 0.35 0.41 0.45 0.47 0.51 0.53 0.55 0.57 0.58
Typical UGR (70:50:20) 4H 4H = 18 *Cell in recessed position - Figures in brackets Cell in lowered position
Typical UGR (70:50:20) 4H 4H = 17
Typical UGR (70:50:20) 4H 4H = 15
DUO Centre Cell Recessed
DUO Centre Cell Recessed
DUO Centre Cell Recessed
MICRO OPTIC 1 x 28W T5
LIVING LOUVRE 4 x 14W T5
SEMI-SPECULAR LOUVRE 1 x 28W T5
o
• 65 Max*= 1847 (2715)cd/m2 • LOR*= 67.1 (75.0)%
o
o
• 65 Max = 1914cd/m2
• SHR MAX = 1.53
300
• 65 Max = 654cd/m2 300
• LOR = 66.9%
350
• LOR = 69.17%
• SHR MAX = 1.70
• SHR MAX = 1.81
SHR NOM 1.50 UTILISATION FACTORS UF(F) Room Reflectance Room Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C W F 0.75 1.00 1.25 1.50 2.00 2.50 3.00 4.00 5.00 0.70 0.50 0.20 0.42 0.47 0.52 0.55 0.60 0.63 0.65 0.68 0.70 0.50 0.30 0.20 0.37 0.42 0.46 0.50 0.54 0.57 0.60 0.63 0.65 0.00 0.00 0.00 0.32 0.36 0.41 0.44 0.48 0.51 0.53 0.56 0.58
SHR NOM 1.50 UTILISATION FACTORS UF(F) Room Reflectance Room Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C W F 0.75 1.00 1.25 1.50 2.00 2.50 3.00 4.00 5.00 0.70 0.50 0.20 0.45 0.50 0.55 0.58 0.62 0.65 0.67 0.69 0.71 0.50 0.30 0.20 0.40 0.45 0.50 0.53 0.57 0.60 0.62 0.65 0.67 0.00 0.00 0.00 0.36 0.40 0.45 0.48 0.52 0.54 0.56 0.59 0.60
SHR NOM 1.75 UTILISATION FACTORS UF(F) Room Reflectance Room Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C W F 0.75 1.00 1.25 1.50 2.00 2.50 3.00 4.00 5.00 0.70 0.50 0.20 0.44 0.51 0.56 0.60 0.65 0.68 0.70 0.72 0.74 0.50 0.30 0.20 0.38 0.46 0.51 0.54 0.59 0.63 0.65 0.68 0.70 0.00 0.00 0.00 0.33 0.40 0.45 0.49 0.54 0.56 0.59 0.61 0.63
Typical UGR (70:50:20) 4H 4H = 18 *Cell in recessed position - Figures in brackets Cell in lowered position
Typical UGR (70:50:20) 4H 4H = 17
Typical UGR (70:50:20) 4H 4H = 12
Lamp Performance
Dimensions
WATTAGE
IL@25°C
LAMP LIFE
276
1 x 14W T5 1 x 24W T5 1 x 28W T5
1,200 1,750 2,600
20,000hrs 20,000hrs 20,000hrs
575 121
102
300
1176
Weight KG
600 600 300 300
x x x x
600 variant 600 emergency variant 1200 variant 1200 emergency variant
1200
600
4.9 5.9 8.1 9.1 Burgess Spring Tee Integration
SAS 150 Spring Tee Integration
QuickLink
Cut Aperture Ceiling Integration
DUO
Go
ORDER CODES
OPTIC
CONFIGURATION
LAMP TYPE
Luminaires for 600 x 600 exposed tee ceilings (supplied without lamps) Micro Optic Side 4 x 14W Micro Optic Centre 3 x 24W Living Louvre Side 4 x 14W Living Louvre Side 3 x 24W Living Louvre Centre 4 x 14W Living Louvre Centre 3 x 24W Semi Specular Louvre Side 4 x 14W Semi Specular Louvre Side 3 x 24W Semi Specular Louvre Centre 4 x 14W Semi Specular Louvre Centre 3 x 24W Luminaires for 1200 x 300 spring tee ceilings (supplied without lamps) Micro Optic Centre 2 x 28W Micro Optic Centre 1 x 28W Living Louvre Centre 2 x 28W Living Louvre Centre 1 x 28W Semi Specular Louvre Centre 2 x 28W Semi Specular Louvre Centre 1 x 28W Luminaires with Bio Dynamic Lighting for 600 x 600 ceilings (supplied with lamps) Micro Optic Side 6 x 14W Micro Optic Centre 5 x 24W Living Louvre Side 6 x 14W Living Louvre Centre 6 x 14W Luminaires with Bio Dynamic Lighting for 1200 x 300 ceilings (supplied with lamps) Micro Optic Centre 3 x 28W Living Louvre Centre 3 x 28W Controllers for Bio Dynamic Lighting Bio Dynamic Controller (controls up to 100 luminaires) Bio Dynamic Controller with LED channel (controls up to 100 luminaires)
ORDER CODE
DUOSH414PXT DUOCH324PXT DUOSH414VXT DUOSH324VXT DUOCH414VXT DUOCH324VXT DUOSH414WXT DUOSH324WXT DUOCH414WXT DUOCH324WXT DUOCH228PST DUOCH128PST DUOCH228VST DUOCH128VST DUOCH228WST DUOCH128WST DUOSYS614PXT DUOCYS524PXT DUOSYS614VXT DUOCYS614VXT DUOCYS328PST DUOCYS328VST DUOBDC DUOBDCL
SPRING TEE CEILING INTEGRATION Replace suffix on order codes above
ST Integration with Spring Tee Ceilings (600 x 600 variants only), i.e. DUOSH414PST T15 TEGULAR CEILING INTEGRATION Additional Order Code
DUO600BKTKIT Bracket Kit to allow XT variants to ‘pull up’ onto T15 Tegular ceilings (included as standard in ST variants) GEAR Replace suffix on order codes above
D Digital DSI Gear, i.e. DUOSD414PXT Y Digital DALI Gear, i.e. DUOSY414PXT DUO COLOUR Add suffix to order codes above
/LB LED Kit Blue, i.e. DUOSH414PXT/LB /LR LED Kit Red, i.e. DUOSH414PXT/LR /LG LED Kit Green, i.e. DUOSH414PXT/LG EMERGENCY Add suffix to order codes above
/EMIN Emergency pack for 4 x 14W variants, i.e. DUOSH414PXT/EMIN EASYTEST OPTION Add suffix to luminaire order codes above
/ET
Easytest self test emergency i.e. DUOSH414PXT/ET
To specify state: Recessed T5 600mm² luminaire with dual optic configuration and Air return facility. Incorporating Intermediate Brightness Zone element to diffuse light and graduate brightness across the ceiling, manufactured in a Tp(a) rated polycarbonate, and (1 / 2) optical cells with (Micro prisms / Living Louvre / Semi spec Louvre) to control light and reduce glare – as Whitecroft Lighting DUO.
WHITECROFT
LIGHTING
LTD
BURLINGTON STREET A S H T O N - U N D E R - LY N E L A N C A S H I R E OL7 0AX UNITED KINGDOM
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