8" x 8" 3-WAY SUPPLY GRILLE - DUCT COVER & DIFFUSER - LOW NOISE - For Ceiling - With Opposing Damper Blades 14" Diameter Measure the size of the

Measure the size of the air duct/drywall opening

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

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

Actual Filter Size – 19 3/4"w x 25 3/4" x 1"

actual front end outer dimensions are approximately 26 5/8" width X 24 5/8" height

8" x 8" 3-WAY SUPPLY GRILLE - DUCT COVER & DIFFUSER - LOW NOISE - For Ceiling - With Opposing Damper Blades 14" Diameter Measure the size of the+ 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