14" x 34" or 34" x 14" Cube Core Eggcrate Return Air Grille return filter actual front end outer dimensions

actual front end outer dimensions are approximately 36 5/8" width X 30 5/8" height

High Quality – High-quality rust-free

Actual Filter Size – 23 3/4"w x 11 3/4" x 1"

Actual Filter Size – 24 3/4"w x 25 3/4" x 1"

Installation is simple

14" x 34" or 34" x 14" Cube Core Eggcrate Return Air Grille return filter actual front end outer dimensions+ Product Details Size 14" x 34" or 34" x 14" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 15. 75" X 35. 75". High Quality High quality, rust free aluminum construction with smooth finished edges and counter sunk screw holes (screws included); no sharp edges.. Installation Location sidewall and ceiling. Design Cubic core eggcrate design Offers highest airflow efficiency at almost 95%, reducing