26" x 28" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 6" Round Duct Pipe it ensures long-lasting performance in 4 X 12 Is CRFG2028 Width_14in

it ensures long-lasting performance in both residential and commercial settings

Its durability and performance contribute to overall comfort

Actual Filter Size – 27 3/4"w x 11 3/4" x 1"

actual front end outer dimensions are approximately 34 5/8" width X 10 5/8" height

Ideal for Walls & Ceilings: Designed for seamless installation in standard 14" X 14" duct openings

26" x 28" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 6" Round Duct Pipe it ensures long lasting performance in 4 X 12 Is CRFG2028 Width_14in it ensures long lasting performance in both residential and commercial settings Its durability and performance contribute to overall comfort