Universal J Block Mounting Block For Exterior Outlets Water Faucets Light Fixtures And Mailboxes Vinyl UniBlock PW Heavy Duty Sturdy Build 8-3/16 By 8-3/16 Inch 1/2 To 1-1/4 Inch Knockout White

Single-pack UniBlock PW universal J-block mounting block
✔️ 8-3/16 x 8-3/16 in J-Channel, adjustable 1/2 to 1-1/4 in

The UniBlock universal J-Block mounting block is designed to mount exterior outlets, water faucets, light fixtures, mailboxes, house numbers, and doorbells. It’s built to withstand harsh weather and keep its color over the life of the home, without chipping, cracking, or splitting. The 2-piece design easily adjusts from 1/2 in to 1-1/4 in to fit a range of siding options, including insulated vinyl siding. Pack of 1.

✅ Surface Dimensions 8-3/16 x 8-3/16 in
✅ Inside dimensions adjust from 1/2 in to 1-1/4 in
✅ Material: Vinyl; Color: White
✅ Package Quantity: 1

💡 What is a J-block mounting block used for in exterior installations?

Here's a handy overview for outdoor mounting and fixture alignment:

- Exterior outlets, faucets, mailboxes, house numbers, and doorbells
- Adjusts to fit 1/2 in to 1-1/4 in knockouts across different siding types
- Made from weather-resistant vinyl to resist cracking, chipping, and color fade