18" x 24" or 24" x 18" Cube Core Eggcrate Return Air Grille Compatible With Duct 6in Actual Filter Size – 35

Actual Filter Size – 35 3/4"w x 27 3/4" x 1"

actual front end outer dimensions are approximately 14 5/8" width X 32 5/8" height

5/8" - 2579 PSI

+ Product Details Size - 24"w X 10"h is the size for the duct opening measurement only

18" x 24" or 24" x 18" Cube Core Eggcrate Return Air Grille Compatible With Duct 6in Actual Filter Size – 35+ Product Details Size 18" x 24" or 24" x 18" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 19. 75" X 25. 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