18" X 8" 2-Way Air Supply Grille – Steel HVAC Vent Cover with Damper, Wall/Ceiling Register, White w25h25 expanding or retracting the gap

expanding or retracting the gap to meet your precise needs

+ Product Details Size – 36"w X 22"h is the size for the duct opening measurement only

+ Product Details Size - 4"w X 14"h is the size for the duct opening measurement only

then you'll need a 14-inch round vent

+ Product Details Size - 8"w X 6"h is the size for the duct opening measurement only

18" X 8" 2-Way Air Supply Grille – Steel HVAC Vent Cover with Damper, Wall/Ceiling Register, White w25h25 expanding or retracting the gap+ Product Details Outer dimensions: 19. 75"W x 9. 75"H fits a 18" X 8" duct opening Durable stamped steel construction ensures long lasting performance Designed for sidewall and ceiling installation with included screws Multi shutter damper with easy lever for precise airflow control Smooth powder coated white finish for a sleek look and scratch resistance + Product Description Maximize your homes airflow with this premium Air Supply Grille air supply