Rectangular Duct End Cap | 6" X 4" End Cap 8in diameter actual front end outer dimensions

actual front end outer dimensions are approximately 32 5/8" width X 22 5/8" height -

Actual Filter Size – 24 3/4"w x 27 3/4" x 1"

Actual Filter Size – 11 3/4"w x 9 3/4" x 1"

while the included installation screws make setup quick and hassle-free

The oval side is crimped and has a lead edge for easy insertion into the oval pipe

Rectangular Duct End Cap | 6" X 4" End Cap 8in diameter actual front end outer dimensions+ Product Details Size Duct end cap is 6" X 4" 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.