J-BLOCK
Be perfect for installing exterior outlets, faucets, light fixtures, mailboxes, house numbers, and doorbells.
Made from polypropylene, it resists chipping, cracking, and splitting, ensuring enhanced durability and long-term reliability.
Its easy snap-on installation saves time and effort.
The surface measures 8-3/16" x 7-3/16" and includes knockouts for a 4" round diameter and a 2-3/8" x 3-3/4" rectangle.
