8" x 8" 4-WAY SUPPLY GRILLE - DUCT COVER & DIFFUSER - LOW NOISE - For Ceiling - With Opposing Damper Blades 18" Diameter Actual Filter Size – 29

Actual Filter Size – 29 3/4"w x 13 3/4" x 1"

scratch-resistant surface that gleams like it's just been waxed

providing efficient performance of up to 300m3/h

This aluminum adjustable louvered garage vent allows air ventilation and circulation in your garage 24 hours a day

+ Product Details Size - 4"w X 28"h is the size for the duct opening measurement only

8" x 8" 4-WAY SUPPLY GRILLE - DUCT COVER & DIFFUSER - LOW NOISE - For Ceiling - With Opposing Damper Blades 18" Diameter Actual Filter Size – 29+ 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