Rectangular Duct End Cap | 26" X 8" End Cap 12in diameter + Product Details Size –

+ Product Details Size – 28"w X 28"h is the size for the duct opening measurement only

blank box design for quick and hassle-free installation

It features a snap-lock design for easy fitting and a secure connection

+ Product Details Size - The listed 12" diameter refers specifically to the size of the duct opening

Measuring 5" in diameter for the duct opening

Rectangular Duct End Cap | 26" X 8" End Cap 12in diameter + Product Details Size –+ Product Details Size Duct end cap is 26" 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.