10" X 8" 3-Way Air Supply Grille – Steel HVAC Vent Cover with Damper, Wall/Ceiling Register, Black 8in diameter + Product Details Size –

+ Product Details Size – 10" X 4" is the size for the duct opening (floor/vent hole) measurement only

providing the flexibility to match specific ventilation requirements or personal comfort levels

Actual Filter Size – 15 3/4"w x 7 3/4" x 1"

+ Product Details Perfect Fit & Easy Sizing - Designed for a 20" x 25" OR 25" x 20" duct opening (measured at the opening)

Actual Filter Size – 15 3/4"w x 31 3/4" x 1"

10" X 8" 3-Way Air Supply Grille – Steel HVAC Vent Cover with Damper, Wall/Ceiling Register, Black 8in diameter + Product Details Size –+ Product Details Outer dimensions: 11. 75"W x 9. 75"H fits a 10" 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