18" x 28" or 28" x 18" Cube Core Eggcrate Return Air Grille w24h24 Design – Individually adjusting curved

Design – Individually adjusting curved blades for better air flow control

6" width X 9

+ Product Spec Sheet 2-Way Wall/Ceiling Register Spec Sheet

+ Product Details Size – 12"w X 20"h is the size for the duct opening measurement only

European: EN 10270-1-SM

18" x 28" or 28" x 18" Cube Core Eggcrate Return Air Grille w24h24 Design – Individually adjusting curved+ Product Details Size 18" x 28" or 28" x 18" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 19. 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