10" x 10" 3-WAY SUPPLY GRILLE - DUCT COVER & DIFFUSER - LOW NOISE - For Ceiling - With Opposing Damper Blades w20h20 actual front end outer dimensions

actual front end outer dimensions are approximately 27 5/8" width X 26 5/8" height

Close For Winter To Prevent The Cold

Some of the best features aren't readily apparent

+ Product Details Size - 4"w X 20"h is the size for the duct opening measurement only

10" x 10" 3-WAY SUPPLY GRILLE - DUCT COVER & DIFFUSER - LOW NOISE - For Ceiling - With Opposing Damper Blades w20h20 actual front end outer dimensions+ Product Details Size 10" X 10" is the size for the duct opening measurement only, actual front end outer dimensions are 3". Design Equipped with lever for full airflow control; back blades made of black plastic for reduced air noise and discreet appearance; "Opposing" back blades, ensuring they don't overlap, provide precise damper control and superior air dispersion. High Quality Aluminum The premium durable aluminum will never rust and it will