12" x 6" Steel Fixed Bar Return Grille - Sidewall and Ceiling w26h26 + Product Description Maximize the 4 X 12 Is CRFG2028 Width_14in

+ Product Description Maximize the efficiency of your ventilation system with our top-of-the-line HVAC grilles and registers

actual front end outer dimensions are approximately 38 5/8" width X 32 5/8" height -

+ Product Details Size – 16"w X 24"h is the size for the duct opening measurement only

+ Product Details Size - 36"w X 14"h is the size for the duct opening measurement only

European: EN 10270-1-SM

12" x 6" Steel Fixed Bar Return Grille Sidewall and Ceiling w26h26 + Product Description Maximize the 4 X 12 Is CRFG2028 Width_14in + Product Description Maximize the efficiency of your ventilation system with our top of the line HVAC grilles and registers actual front end outer dimensions are approximately 38 5 8" width X 32 5 8" height