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

+ Product Details Size - 32"w X 8"h is the size for the duct opening measurement only

Complies with industry standards of USA: ASTM D-882

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

Actual Filter Size – 35 3/4"w x 23 3/4" x 1"

actual front end outer dimensions are approximately 16 5/8" width X 8 5/8" height

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