Rectangular Duct End Cap | 18" X 10" End Cap Color_R-4.2 Yellow meaning fewer dust particles and

meaning fewer dust particles and other air impurities can pass through the filter

+ Product Details Size – 12"w X 14"h is the size for the duct opening measurement only

Actual Filter Size – 33 3/4"w x 27 3/4" x 1"

with actual front end outer dimensions of 10"

Design – Unrestricted airflow for your HVAC system - adjustable one-way louver with full horizontal airflow directional control - single deflection supply grill with 96% airflow - noise free components - no vibrating louvers etc

Rectangular Duct End Cap | 18" X 10" End Cap Color_R-4.2 Yellow meaning fewer dust particles and+ 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.