18" x 32" or 32" x 18" Cube Core Eggcrate Return Air Grille 3-Way or 4-Way Rust-Free Aluminum - Made from

Rust-Free Aluminum - Made from strong

the actual front end outer dimensions are 8" in diameter

With our extensive selection of Grilles

+ Product Details Size – 12"w X 14"h is the size for the duct opening measurement only

4" X 10" Is The Size For The Duct Opening (floor/vent hole) Measurement Only

18" x 32" or 32" x 18" Cube Core Eggcrate Return Air Grille 3-Way or 4-Way Rust-Free Aluminum - Made from+ Product Details Size 18" x 32" or 32" x 18" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 19. 75" X 33. 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