20" x 10" Steel Fixed Bar Return Grille - Sidewall and Ceiling Powder Coated + Product Description Enhance your Ducting Components RG2016 FBA-HP Applications The C box

+ Product Description Enhance your ventilation system with our high-quality grilles and registers

+ Product Details Size - 36"w X 34"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 35

+ Product Details Perfect Fit & Easy Sizing - Designed for a 16" x 16" duct opening (measured at the opening)

+ Product Details Size - 4"w X 28"h is the size for the duct opening measurement only

20" x 10" Steel Fixed Bar Return Grille Sidewall and Ceiling Powder Coated + Product Description Enhance your Ducting Components RG2016 FBA HP Applications The C box + Product Description Enhance your ventilation system with our high quality grilles and registers + Product Details Size 36"w X 34"h is the size for the duct opening measurement only