8" x 8" 4-WAY SUPPLY GRILLE - DUCT COVER & DIFFUSER - LOW NOISE - For Ceiling - With Opposing Damper Blades Width_20in 75" width X 5

75" width X 5

Actual Filter Size – 11 3/4"w x 23 3/4" x 1"

Ideal for Walls & Ceilings: Designed for seamless installation in standard 16" X 10" duct openings

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

+ Product Details Size - 4"w X 16"h is the size for the duct opening measurement only

8" x 8" 4-WAY SUPPLY GRILLE - DUCT COVER & DIFFUSER - LOW NOISE - For Ceiling - With Opposing Damper Blades Width_20in 75" width X 5+ Product Details Size 8" X 8" 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 never