Round Metal Pipe Reducer & Increaser | 12" to 6" HVAC Duct Reducer or Increaser 30g Gauge | Galvanized Sheet Metal Ducting Connector is Compatible with Duct 6" 8in diameter + Product Details Size – Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Size – Stick-on collar is 16" and it is compatible with duct 16"

this grille enhances air circulation

Crafted from 600D polyester

Assembeled Before Powder Coat Paint

+ Product Details Size – 10"w X 18"h is the size for the duct opening measurement only

Round Metal Pipe Reducer & Increaser 12" to 6" HVAC Duct Reducer or Increaser 30g Gauge Galvanized Sheet Metal Ducting Connector is Compatible with Duct 6" 8in diameter + Product Details Size – Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Size – Stick on collar is 16" and it is compatible with duct 16" this grille enhances air circulation