24" x 36" or 36" x 24" Cube Core Eggcrate Return Air Grille Powder-Coated Actual Front End Outer Dimensions

Actual Front End Outer Dimensions Are 3

+ Product Details Size – 12" x 12" is the size for the duct opening measurement only

Built with rust-resistant aluminum and a scratch-resistant powder-coated finish

Actual Filter Size – 7 3/4"w x 15 3/4" x 1"

Actual Filter Size – 24 3/4"w x 35 3/4" x 1"

24" x 36" or 36" x 24" Cube Core Eggcrate Return Air Grille Powder-Coated Actual Front End Outer Dimensions+ Product Details Size 24" x 36" or 36" x 24" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 25. 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