UNIVERSAL J-BLOCK WALL MOUNTING 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.