26" x 36" or 36" x 26" Cube Core Eggcrate Return Air Grille Powder Coated Actual Filter Size – 13

Actual Filter Size – 13 3/4"w x 21 3/4" x 1"

Featuring a multi-shutter damper with an easy-access lever

+ Product Details Perfect Fit & Easy Sizing - Designed for a 22" x 10" OR 10" x 22" duct opening (measured at the opening)

actual front end outer dimensions are approximately 34 5/8" width X 12 5/8" height -

Easy Installation – Just pop the diffuser right into the wall duct hole and the side springs will hold it right into place so that it looks clean

26" x 36" or 36" x 26" Cube Core Eggcrate Return Air Grille Powder Coated Actual Filter Size – 13+ Product Details Size 26" x 36" or 36" x 26" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 27. 75" X 37. 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