10" BUTTERFLY DAMPER - For T-Bar, Drop Ceiling Grilles, (10" round duct opening) w20h20 actual front end outer dimensions

actual front end outer dimensions are approximately 26 5/8" width X 30 5/8" height

Actual Filter Size – 21 3/4"w x 15 3/4" x 1"

featuring a 6" round duct opening

+ Product Details Size - 20"w X 22"h is the size for the duct opening measurement only

Optimized Comfort: By putting airflow control at your fingertips

10" BUTTERFLY DAMPER - For T-Bar, Drop Ceiling Grilles, (10" round duct opening) w20h20 actual front end outer dimensions+ Product Details Size 10" round duct opening Heavy Gauge Steel Heavier gauge than needed, built for durability and long life in mind, but still very thin. Installation Location Ceiling. Design This airflow control component are made to connect to a drop ceiling lay in diffuser grille. Powder Coat Finish smooth, shiny, scratch resistant, beautiful. Looks like it was just waxed. + Product Description Introducing the 6" Butterfly Damper Your Solution