Description
There are often gaps between electrical boxes located in exterior ceilings and walls. When warm air leaves the home, it can also carry water vapor that can then lead to mold and rot in addition to increasing the pressure on the heating unit during cold weather months.
The LESSCO air vapor box attaches to a ceiling frame or wall to insulate up to three standard electrical boxes. Low expansion foam or a silicon sealant should be used to seal the box at the places where wires pass into the cavity of the wall. Use sheathing tape to adhere the vapor barrier to the box flange. Doing so will prevent air leaks and moisture buildup through electrical boxes. Each LESSCO air vapor box measures 6.5" x 7" x 2.9" deep on the inside and include the hinge feature patented by LESSCO.
Large price break and FREE SHIPPING starts on orders of at least 360 units (6 cases).
- Language of Instructions: English
- Country of Origin: USA
- Manufacturer: Low Energy Systems Supply Company (LESSCO)
Frequently Asked Questions
What problem do air vapor boxes solve in a home?
Air vapor boxes help seal gaps around electrical boxes in exterior walls and ceilings, preventing warm air and moisture from escaping. This reduces the risk of mold, rot, and energy loss.
How does the LESSCO air vapor box improve energy efficiency?
By blocking air leaks around electrical boxes, the vapor box reduces heat loss and helps your heating system work more efficiently during colder months.
How is the LESSCO air vapor box installed?
The box attaches to a ceiling frame or wall and is sealed using low expansion foam or silicone around wire entry points. Sheathing tape is then used to secure the vapor barrier to the box flange.
What makes the LESSCO air vapor box unique?
Each box includes a patented hinge design and is sized to insulate up to three standard electrical boxes, making installation easier and more versatile.
Where to Get Professional Installation Services for Air Sealed Electrical Boxes
If you’d rather have this done by a pro, look for licensed electricians or insulation contractors who specialize in air sealing and weatherization. Many HVAC companies and home performance contractors also offer this service as part of a larger energy efficiency upgrade. You can also check with local utility rebate programs or energy audit providers, since they often maintain lists of qualified installers. Working with a certified professional helps ensure proper sealing, code compliance, and long-term performance.
