18" X 10" 3-Way Air Supply Grille – Steel HVAC Vent Cover with Damper, Wall/Ceiling Register, White 12in diameter actual front end outer dimensions

actual front end outer dimensions are approximately 22 5/8" width X 38 5/8" height

Design – Circular return valves - designed to be used in low and medium pressure ventilation air conditioning systems

rust-free aluminum construction with smooth finished edges and counter-sunk screw holes (screws included)

Size - 10"w X 10"h is the size for the duct opening measurement only

this grille is a testament to high standard craftsmanship

18" X 10" 3-Way Air Supply Grille – Steel HVAC Vent Cover with Damper, Wall/Ceiling Register, White 12in diameter actual front end outer dimensions+ Product Details Outer dimensions: 19. 75"W x 11. 75"H fits a 18" X 10" 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