26" x 34" or 34" x 26" Cube Core Eggcrate Return Air Grille w30h30 Actual Filter Size – 33

Actual Filter Size – 33 3/4"w x 17 3/4" x 1"

+ Product Details Perfect Fit & Easy Sizing - Designed for a 20" x 30" OR 30" x 20" duct opening (measured at the opening)

is fireproof and ensures efficient thermal performance

much more than required 700 PSI for R410

26" x 34" or 34" x 26" Cube Core Eggcrate Return Air Grille w30h30 Actual Filter Size – 33+ 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