Rectangular Duct End Cap | 18" X 8" End Cap Wall Angle Register Boot Design – The "W" shaped

Design – The "W" shaped pleats give you more filter surface thereby capturing more dust

+ Product Details Size - 16"w X 14"h is the size for the duct opening measurement only

+ Product Details Size - 18"w X 8"h X 2"d (for duct opening measurement only)

it is concealed and impenetrable

It comes with two versatile mounting base options—solid and ring—making installation simple and flexible

Rectangular Duct End Cap | 18" X 8" End Cap Wall Angle Register Boot Design – The "W" shaped+ Product Details Size Duct end cap is 18" X 8" 26 gauge galvanized steel end cap, rectangular shape. Premium Quality Our rectangular duct cap is made of high quality galvanized sheet metal material (galvanized steel construction for durability and rust prevention). Made in the USA. Applications The product is used for stopping all types of fittings and also used to terminate a rectangular duct run in an HVAC application with a rectangular duct cap.