8" x 8" 2-WAY ALUMINUM BAR CEILING DIFFUSER - Vent Duct Cover - With Opposing Dampers via Lever Control Insulated Line + Product Details Size –

+ Product Details Size – 16" x 20" or 20" x 16" is the size for the duct opening measurement only

Actual Filter Size – 17 3/4"w x 31 3/4" x 1"

actual front end outer dimensions are approximately 18 5/8" width X 27 5/8" height

Ideal for Walls & Ceilings: Designed for seamless installation in standard 14" X 10" duct openings

+ Product Details Size – 32"w X 34"h is the size for the duct opening measurement only

8" x 8" 2-WAY ALUMINUM BAR CEILING DIFFUSER - Vent Duct Cover - With Opposing Dampers via Lever Control Insulated Line + Product Details Size –+ 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