8" x 8" 3-WAY SUPPLY GRILLE - DUCT COVER & DIFFUSER - LOW NOISE - For Ceiling - With Opposing Damper Blades Powder-Coat actual front end outer dimensions

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

actual front end outer dimensions are approximately 10 5/8" width X 30 5/8" height

Actual Filter Size – 13 3/4"w x 31 3/4" x 1"

+ Product Details Size - 8"w X 16"h is the size for the duct opening measurement only

8" x 8" 3-WAY SUPPLY GRILLE - DUCT COVER & DIFFUSER - LOW NOISE - For Ceiling - With Opposing Damper Blades Powder-Coat actual front end outer dimensions+ 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