18" x 24" or 24" x 18" Cube Core Eggcrate Return Air Grille Compatible With Duct 6in + Product Details Size –

+ Product Details Size – 26"w X 22"h is the size for the duct opening measurement only

+ Product Details Size - 20"w X 8"h is the size for the duct opening measurement only

Achieve the perfect airflow with adjustable control by rotating the middle disk

5/8" - 2579 PSI

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

18" x 24" or 24" x 18" Cube Core Eggcrate Return Air Grille Compatible With Duct 6in + Product Details Size –+ 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