12" x 14" or 14" x 12" Cube Core Eggcrate Return Air Grille Aluminum Adjustable Curved Blade Design – Removable door/face for

Design – Removable door/face for easy filter change & cleaning - uses a 1" thick filter

+ Product Details Size – 12"w X 36"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 6" x 22" or 22" x 6" duct opening (measured at the opening)

+ Product Details Perfect Fit & Easy Sizing - Designed for a 8" x 24" or 24" x 8" duct opening (measured at the opening)

and durability

12" x 14" or 14" x 12" Cube Core Eggcrate Return Air Grille Aluminum Adjustable Curved Blade Design – Removable door/face for+ Product Details Size 12" x 14" or 14" x 12" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 75" X 15. 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