6" x 6" 4-WAY SUPPLY GRILLE - DUCT COVER & DIFFUSER - LOW NOISE - For Ceiling - With Opposing Damper Blades Color_R-4.2 Yellow 75"H – fits a 10"

75"H – fits a 10" X 4" duct opening

these heavy-duty louvers are ideal for use in attics

actual front end outer dimensions are approximately 36 5/8" width X 12 5/8" height

+ Product Details Size – 26"w X 30"h is the size for the duct opening measurement only

+ Product Details Size – 34"w X 34"h is the size for the duct opening measurement only

6" x 6" 4-WAY SUPPLY GRILLE - DUCT COVER & DIFFUSER - LOW NOISE - For Ceiling - With Opposing Damper Blades Color_R-4.2 Yellow 75"H – fits a 10"+ 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