Rectangular Duct End Cap | 26" X 8" End Cap 12in diameter It features a snap-lock design

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

Measuring 5" in diameter for the duct opening

Quiet Airflow – Opposing blade damper design reduces vibration and noise for smoother air distribution

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

blank box design for quick and hassle-free installation

Rectangular Duct End Cap | 26" X 8" End Cap 12in diameter It features a snap-lock design+ 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.