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

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

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

actual front end outer dimensions are approximately 26 5/8" width X 38 5/8" height

Powder paint coating - White

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