26" x 36" or 36" x 26" Cube Core Eggcrate Return Air Grille 12in diameter Actual Filter Size – 25

Actual Filter Size – 25 3/4"w x 21 3/4" x 1"

function toggleAccordion(event) { event

actual front end outer dimensions are approximately 11

+ Product Details Size – 18" x 34" or 34" x 18" is the size for the duct opening measurement only

Installation – Easy drop ceiling installation

26" x 36" or 36" x 26" Cube Core Eggcrate Return Air Grille 12in diameter Actual Filter Size – 25+ Product Details Size 26" x 36" or 36" x 26" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 27. 75" X 37. 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