Round Metal Pipe Reducer & Increaser | 12" to 4" HVAC Duct Reducer or Increaser 30g Gauge | Galvanized Sheet Metal Ducting Connector is Compatible with Duct 4" Drop Ceilings / Aluminum ensuring it fits most standard actual front end outer LO246 Powder Coated

ensuring it fits most standard thermostat models

+ Product Details Size - 18"w X 26"h X 2"d (for duct opening measurement only)

Heavy-gauge all-steel construction

Easy To Use – With this comfortable handle you will have no trouble doing your cuts - strong grip handle - 1 Additional tube deburring HSS blade in the back of extension handle

+ Product Details Size - 18"w X 18"h Is The Size For The Duct Opening Only

Round Metal Pipe Reducer & Increaser 12" to 4" HVAC Duct Reducer or Increaser 30g Gauge Galvanized Sheet Metal Ducting Connector is Compatible with Duct 4" Drop Ceilings Aluminum ensuring it fits most standard actual front end outer LO246 Powder Coated ensuring it fits most standard thermostat models + Product Details Size 18"w X 26"h X 2"d (for duct opening measurement only)