Rectangular Duct End Cap | 18" X 6" End Cap Compatible with Duct 4" + Product Details Size –

+ Product Details Size – 30"w X 32"h is the size for the duct opening measurement only

Applications – Suitable for cutting plastic

With precise measurements and easy installation

Cubic core eggcrate design has the highest rate of airflow efficiency

Rectangular Duct End Cap | 18" X 6" End Cap Compatible with Duct 4" + Product Details Size –+ Product Details Size Duct end cap is 18" X 6" 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.