Rectangular Duct End Cap | 18" X 10" End Cap Height_22in + Product Details Size -

+ Product Details Size - 26"w X 34"h is the size for the duct opening measurement only

+ Product Details Size - 26"w X 24"h is the size for the duct opening measurement only

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Actual Front End Outer Dimensions Are 12" Width X 5" Height - SEE IN DESCRIPTION HOW TO MEASURE A GRILLE

Drainage Test: Run the pump for an extended period

Rectangular Duct End Cap | 18" X 10" End Cap Height_22in + Product Details Size -+ Product Details Size Duct end cap is 18" 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.