How-To Guide

Make sure the junction box has been properly installed and "rough-wired" all wires should be run through the box and secured before installing BOX SHELL.

Fold / Tear the BOX SHELL to fit the desired wall type. This particular example is a 2x6 wall. BOX SHELL is designed to be trimmed or folded to fit any standard wall depth.

Install the BOX SHELL over the junction box, making sure the wires are running through the wire cuts in the BOX SHELL.

Then tape closed any gaps that may have been created in the installation process.

Staple or screw the tabs to the wall framing to secure the BOX SHELL in place before installing insulation.

Install (fiberglass) wall insulation around the BOX SHELL. Install vapor barrier if desired.

Install wall board / finished wall material in the typical method. Paint if desired.

Install outlet / switch / trim device, but do NOT screw it to the junction box yet. Be sure the junction box can be seen as you will need access for the next step.

Using low expansion latex spray foam, push the nozzle tube between the junction box and the BOX SHELL. Push the tube all the way to the back along the box.

Slowly fill the void with foam. Look inside the junction box and when foam starts to come through the wire holes in the back, pull the spray tube almost all the way out. Continue filling slowly until a small amount of foam can be seen all the way around the wall material and the junction box.

Your junction box is now sealed! Wait and review foam expansion after 1 hour. Clean up with soap and water as necessary.

Screw device into junction box. Wait for foam to completely cure, and make sure there is no foam inside the junction box before turning on the power.