Adjustable Compartment Box, Clear, 1 21/32 inH x 7 3/8 inL x 11 1/2 inW, 1EA/ PART NAME ASSIGNED BY CONTROLLING AGENCY: SUPPLY DIFFUSER W/DAMPER 24 SPECIAL FEATURES: DIMENSIONS: USA:23'(W)X23'(D)X3"(H), 6" NECK; STEEL COLOR WHITE FINISH POWDER COATED EPOXY AIR DIFFUSION PATTERN 360 DEGREES ; COMPATIBLE WITH T-BAR SUSPENDED DROP CEILINGS INCLUDES 4-WAY ADJUSTABLE DIFFUSER BACK PAN FOR 6 INCH DUCT ELECTROSTATIC FILTERS SDIG77500 4 WAY DIFFUSER 36N451