Black T-Bar Drop Ceiling Grille - Flat Plate Plaque Diffuser - 24" x 24" - 8" Collar Round To Oval Straight Boot + Product Details Perfect Fit Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Perfect Fit & Easy Sizing - Designed for a 6" x 8" or 8" x 6" duct opening (measured at the opening)

5/8" - 2579 PSI

Drop Ceiling HVAC Supply Grille - For T-Bar Lay-In - 3 Coned - 24" x 24" - For 8" Vent Connection - Black

+ Product Details Size & Compatibility – The size of the wall angle register boot is 10" X 3

+ Product Details Size – 12"w X 18"h or 18" x 12" is the size for the duct opening measurement only

Black T Bar Drop Ceiling Grille Flat Plate Plaque Diffuser 24" x 24" 8" Collar Round To Oval Straight Boot + Product Details Perfect Fit Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Perfect Fit & Easy Sizing Designed for a 6" x 8" or 8" x 6" duct opening (measured at the opening) 5 8" 2579 PSI