Rectangular Duct End Cap | 20" X 8" End Cap Width_26in 25" Plenum Size 20x20 Filter

25" Plenum Size 20x20 Filter Size to be used: 20x20x1

+ Product Details Size – 20"w X 10"h pleated MERV 8 filter for HVAC return filter grille - 3 Pack

Tamper-Proof Security – Features a robust design to prevent unauthorized access and protect your thermostat settings

Actual Filter Size – 23 3/4"w x 15 3/4" x 1"

Rectangular Duct End Cap | 20" X 8" End Cap Width_26in 25" Plenum Size 20x20 Filter+ Product Details Size Duct end cap is 20" 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.