12" X 10" 3-Way Air Supply Grille – Steel HVAC Vent Cover with Damper, Wall/Ceiling Register, White Material_Aluminum + Product Details Size –

+ Product Details Size – 28"w X 8"h is the size for the duct opening measurement only

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actual front end outer dimensions are approximately 36 5/8" width X 22 5/8" height

and sound level range of NC 25 to 35

and a control lever designed for seamless operation

12" X 10" 3-Way Air Supply Grille – Steel HVAC Vent Cover with Damper, Wall/Ceiling Register, White Material_Aluminum + Product Details Size –+ Product Details Outer dimensions: 13. 75"W x 11. 75"H fits a 12" 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