8" x 8" 2-WAY ALUMINUM BAR CEILING DIFFUSER - Vent Duct Cover - With Opposing Dampers via Lever Control Insulated Line actual front end outer dimensions

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

actual front end outer dimensions are approximately 7

+ Product Details Size – 6" round duct opening-

Actual Filter Size – 27 3/4"w x 25 3/4" x 1"

8" x 8" 2-WAY ALUMINUM BAR CEILING DIFFUSER - Vent Duct Cover - With Opposing Dampers via Lever Control Insulated Line actual front end outer dimensions+ 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