14" x 14" 4-WAY SUPPLY GRILLE - DUCT COVER & DIFFUSER - LOW NOISE - For Ceiling - With Opposing Damper Blades Compatible with Duct 10" Actual Filter Size – 9

Actual Filter Size – 9 3/4"w x 7 3/4" x 1"

the actual front end outer dimensions are 8" in diameter

+ Product Details Size – 8"w X 20"h is the size for the duct opening measurement only

For 14" duct opening

14" x 14" 4-WAY SUPPLY GRILLE - DUCT COVER & DIFFUSER - LOW NOISE - For Ceiling - With Opposing Damper Blades Compatible with Duct 10" Actual Filter Size – 9+ Product Details Size 14" X 14" 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