18" X 8" 3-Way Air Supply Grille – Steel HVAC Vent Cover with Damper, Wall/Ceiling Register, White 18" Diameter /* Adding space between bullet

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Actual Filter Size – 24 3/4"w x 29 3/4" x 1"

Versatility and Durability: The red oak wood not only adds a touch of warmth and softness to your room but can also be sanded and refinished according to your specific application needs

12"w X 4"h Is The Size For The Duct Opening Measurement Only

+ Product Details Size - 6"w X 6"h X 2"d (for duct opening measurement only)

18" X 8" 3-Way Air Supply Grille – Steel HVAC Vent Cover with Damper, Wall/Ceiling Register, White 18" Diameter /* Adding space between bullet+ 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