26" x 34" or 34" x 26" Cube Core Eggcrate Return Air Grille 8" Diameter this air vent diffuser is

this air vent diffuser is built to last

Actual Filter Size – 21 3/4"w x 11 3/4" x 1"

actual front end outer dimensions are 19" Width X 19" Height

Key Features:

+ Product Details Perfect Fit & Easy Sizing - Designed for a 8" x 22" or 22" x 8" duct opening (measured at the opening)

26" x 34" or 34" x 26" Cube Core Eggcrate Return Air Grille 8" Diameter this air vent diffuser is+ Product Details Size 26" x 34" or 34" x 26" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 27. 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