28" x 28" Cube Core Eggcrate Return Air Grille Compatible with Duct 10" + Product Details Size –

+ Product Details Size – 24"w X 28"h is the size for the duct opening measurement only

where form meets function flawlessly

Actual Filter Size – 35 3/4"w x 21 3/4" x 1"

Actual Filter Size – 23 3/4"w x 33 3/4" x 1"

During summer

28" x 28" Cube Core Eggcrate Return Air Grille Compatible with Duct 10" + Product Details Size –+ Product Details Size 28" x 28" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 29. 75" X 29. 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 electric