8" x 8" - 1-Way Extruded Aluminum Ceiling Diffuser Square - HVAC Vent Cover w28h28 + Product Details Size -

+ Product Details Size - 30"w X 6"h is the size for the duct opening measurement only

These are airflow control components made to connect to supply grilles of the drop ceiling

actual front end outer dimensions are approximately 32 5/8" width X 36 5/8" height

actual front end outer dimensions are approximately 18 5/8" width X 20 5/8" height

+ Product Details Size – 10" x 24" or 24" x 10" is the size for the duct opening measurement only

8" x 8" - 1-Way Extruded Aluminum Ceiling Diffuser Square - HVAC Vent Cover w28h28 + 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