6" BUTTERFLY DAMPER - For T-Bar, Drop Ceiling Grilles, Lay in Diffusers (6" round duct opening) Compatible With Duct 6in + Product Details Size –

+ Product Details Size – 12" x 30" or 30" x 12" is the size for the duct opening measurement only

And The Cooler Air From Outside WIll Flow In From The Bottom

+ Product Details Size – 10"w X 26"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 32 5/8" width X 16 5/8" height

Heat Pump And Centralized Air Ducted Units

6" BUTTERFLY DAMPER - For T-Bar, Drop Ceiling Grilles, Lay in Diffusers (6" round duct opening) Compatible With Duct 6in + Product Details Size –+ Product Details Size 6" 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 for