6" x 6" - Corner Direction Extruded Aluminum Ceiling Diffuser Square - HVAC Vent Cover w18h18 + Product Details Size –

+ Product Details Size – 20"w X 36"h is the size for the duct opening measurement only

Actual Filter Size – 35 3/4"w x 5 3/4" x 1"

Easy Installation – Complete set of sponge gasket and mounting frame included

polished look

Actual Filter Size – 23 3/4"w x 21 3/4" x 1"

6" x 6" - Corner Direction Extruded Aluminum Ceiling Diffuser Square - HVAC Vent Cover w18h18 + Product Details Size –+ Product Details Size 6" X 6" 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