Round Metal Pipe Reducer & Increaser | 20" to 18" HVAC Duct Reducer or Increaser 26g Gauge | Galvanized Sheet Metal Ducting Connector is Compatible with Duct 18" Top Ceiling Box + Product Description Maximize HVAC

+ Product Description Maximize HVAC efficiency with our aluminum eggcrate return air filter grille

these blades deliver super sharp cuts without bending or breaking

+ Product Details Size – 26" x 26" is the size for the duct opening measurement only

+ Product Details Size - 34"w X 6"h X 2"d (for duct opening measurement only)

+ Product Details Size - 14"w X 14"h Is The Size For The Duct Opening Measurement Only

Round Metal Pipe Reducer & Increaser | 20" to 18" HVAC Duct Reducer or Increaser 26g Gauge | Galvanized Sheet Metal Ducting Connector is Compatible with Duct 18" Top Ceiling Box + Product Description Maximize HVAC+ Product Details Size & Compatibilty The 20" to 18" round metal pipe reducer & increaser 30 gauge is compatible with duct 20" to 18". Made in the USA Premium Quality Our galvanized ducting connector is made of high quality galvanized sheet metal. Applications Reducers transition ducts from larger to smaller sizes and ensure smooth, continuous airflow. + Product Description The HVAC Premium Round Metal Pipe Reducer & Increaser is crafted from high