Round Metal Pipe Reducer & Increaser | 6" to 4" HVAC Duct Reducer or Increaser 30g Gauge | Galvanized Sheet Metal Ducting Connector is Compatible with Duct 4" Adjustable Return + Product Details Size – 4 X 12 Is CRFG2028 Width_14in

+ Product Details Size – 6"w X 14"h is the size for the duct opening measurement only

+ Product Details Size – 30"w X 24"h is the size for the duct opening measurement only

vents or diffusers and can even be installed on ceiling vents unlike most magnetic vent covers in the market today

Designed for sidewall and ceiling installation with included screws

actual front end outer dimensions are approximately 32 5/8" width X 38 5/8" height

Round Metal Pipe Reducer & Increaser 6" to 4" HVAC Duct Reducer or Increaser 30g Gauge Galvanized Sheet Metal Ducting Connector is Compatible with Duct 4" Adjustable Return + Product Details Size – 4 X 12 Is CRFG2028 Width_14in + Product Details Size – 6"w X 14"h is the size for the duct opening measurement only + Product Details Size – 30"w X 24"h is the size for the duct opening measurement only