8" x 18" or 18" x 8" Cube Core Eggcrate Return Air Grille Black making it a reliable choice

making it a reliable choice for improving indoor air quality

function toggleAccordion(event) { event

+ Product Details Size – 32"w X 22"h is the size for the duct opening measurement only

Designed for a 1" thick filter

+ Product Details Size - 22"w X 16"h is the size for the duct opening measurement only

8" x 18" or 18" x 8" Cube Core Eggcrate Return Air Grille Black making it a reliable choice+ Product Details Size 8" x 18" or 18" x 8" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 9. 75" X 19. 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