18" x 18" Cube Core Eggcrate Return Air Grille w8h8 875" width X 13

875" width X 13

Design – Removable face for cleaning and access to damper - wooden damper for airflow shutoff control

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+ Product Details Size – 10" x 10" is the size for the duct opening measurement only

18" x 18" Cube Core Eggcrate Return Air Grille w8h8 875" width X 13+ Product Details Size 18"w X 18"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 19. 75" width X 19. 75" height. High Quality High quality rust free, strong aluminum construction with smooth finished edges for easy and safe use; Filter Grille features a user friendly plastic latch that requires no screwdriver for opening. Installation Location sidewall and ceiling. Design Cubic core eggcrate