With these boxes, a bit of high temperature silicone around the wire is usually all you need to seal the box, and some canned foam to seal the box to the wall. For trouble-free production and protection of the installed electronic devices, the modular control cabinet must be optimally sealed in its overall construction. This includes the rear wall, side panels, doors, door handle and ventilation grille with climate filter for the air intake. They're commonly used for street lighting, outdoor events, and temporary power distribution. These boxes must meet strict ingress protection standards to prevent water and dust. Choose the right box based on environment (indoor/outdoor), load capacity, and durability. Practice good wiring: secure. Installing electrical boxes, light cans and pulling cables is an important task, but a critical detail is to make sure that as these are installed, they are also properly air sealed. Why? Any penetration into the walls can allow air to flow in and out of the conditioned space. Insert a key or other object through the tear tab in the middle of the seal, and tear along the. With the right materials and techniques, you can effectively air-seal electrical boxes and minimize air leakage.