8" x 26" or 26" x 8" Cube Core Eggcrate Return Air Grille Powder-Coat + Product Details Size –

+ Product Details Size – 12"w X 18"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 26 5/8" width X 38 5/8" height -

High Quality – High quality ABS plastic will never rust

As The Hot Air Will Flow Up & Out

listed size +1

8" x 26" or 26" x 8" Cube Core Eggcrate Return Air Grille Powder-Coat + Product Details Size –+ Product Details Size 8" x 26" or 26" x 8" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 9. 75" X 27. 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