Rectangular Duct End Cap | 22" X 10" End Cap 4" Diameter The first number in a

The first number in a access panel size represents the width

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+ Product Details Size - 24"w X 12"h is the size for the duct opening measurement only

Rectangular Duct End Cap | 22" X 10" End Cap 4" Diameter The first number in a+ Product Details Size Duct end cap is 22" X 10" 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.