6" x 6" 3-WAY SUPPLY GRILLE - DUCT COVER & DIFFUSER - LOW NOISE - For Ceiling - With Opposing Damper Blades 2-Way actual front end outer dimensions

actual front end outer dimensions are approximately 38 5/8" width X 14 5/8" height -

you can attain the diameter of the vent

Actual Filter Size – 13 3/4"w x 29 3/4" x 1"

very easy to do

6" x 6" 3-WAY SUPPLY GRILLE - DUCT COVER & DIFFUSER - LOW NOISE - For Ceiling - With Opposing Damper Blades 2-Way actual front end outer dimensions+ 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