Round Metal Pipe Reducer & Increaser | 10" to 4" HVAC Duct Reducer or Increaser 30g Gauge | Galvanized Sheet Metal Ducting Connector is Compatible with Duct 4" d + Product Details Size – Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Size – 18" x 34" or 34" x 18" is the size for the duct opening measurement only

actual front end outer dimensions are approximately 32 5/8" width X 26 5/8" height -

+ Product Details Size - 10"w X 16"h is the size for the duct opening measurement only

Crafted from high-quality

+ Product Details Outer dimensions: 25

Round Metal Pipe Reducer & Increaser 10" to 4" HVAC Duct Reducer or Increaser 30g Gauge Galvanized Sheet Metal Ducting Connector is Compatible with Duct 4" d + Product Details Size – Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Size – 18" x 34" or 34" x 18" is the size for the duct opening measurement only actual front end outer dimensions are approximately 32 5 8" width X 26 5 8" height