1 SHAHROKHI MANUFACTURINGCO. SHAHROKHI »ioµB{ »Tí®æ ³¯BinB ºnMnB SH.SDI.F1 SH.SDI.F3 SH.SDI.F2 SH.SDI.F4 TYPE (B) TYPE (A) SH.SDI.F2 SH.SDI.F1 SH.SDI.F3 SH.SDI.F4 Shahrokhi fixed square ceiling diffusers installeasilyoverthesquareductorround ductwithanadaptor(figure18). Inthesediffusershighairdiffusionflowing underceilingresultsinrapidtemperature andvelocityequalizationofthemixedair mass. 2 FRAME DESCRIPTION RBd¼±U JB SHAHROKHI MANUFACTURINGCO. SHAHROKHI »ioµB{ »Tí®æ ³¯BinB D,E,F,G (FIGURE2)