20" x 24" or 24" x 20" Cube Core Eggcrate Return Air Grille Compatible With Duct 12in actual front end outer dimensions

actual front end outer dimensions are 19" Width X 11" Height

so you are not left with much waste

actual front end outer dimensions are approximately 32 5/8" width X 22 5/8" height

Never Rust Plastic 2-Way Vertical Air Supply Register

Install 2 Vents

20" x 24" or 24" x 20" Cube Core Eggcrate Return Air Grille Compatible With Duct 12in actual front end outer dimensions+ Product Details Size 20" x 24" or 24" x 20" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 21. 75" X 25. 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