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

+ Product Details Size - 12"w X 24"h X 2"d (for duct opening measurement only)

+ Product Details Perfect Fit & Easy Sizing - Designed for a 8" x 36" or 36" x 8" duct opening (measured at the opening)

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Installation Location – sidewall and ceiling

Perforated steel grille for return air flow

Rectangular Duct End Cap | 18" X 10" End Cap Adjustable Return + 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.