LESSCO Air Vapor Barrier Box

The LESSCO Air Vapor Barrier Box has been used throughout the United States, including Alaska, since 1985. Extensive blower door testing has proven it to be very effective in eliminating cold air infiltration and warm air exfiltration through electrical boxes and openings in exterior walls and ceilings. The Lessco Air Vapor Barrier Box has also been used with equally outstanding results in commercial applications using steel framing, steel boxes, conduit and armored cable. Dimensions are: 6 1/2″ x 7 1/2″ x 3″ deep. Please see links below for more vapor & thermal barriers.

The new, improved LESSCO Air Vapor Barrier Box features a unique "hinge" design that makes it compatible with virtually all current electrical boxes on the market today.

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Green Power Points
  • Eliminates air leakage through electrical boxes
  • Prevents moisture damage in walls and hence helps deter mold
  • Improves comfort and energy efficiency
  • Easy to install patented hinge design
  • One size fits all electrical boxes

  • Special Discount
    Our goal is to offer great products at great prices! Save even more when you order TWO (2) or more boxes!

    Shipping: FREE shipping on most orders of $99.00 or more! Low Flat Rates on all other orders.

    We Are Here To Help
    If you find something confusing or you have questions, please let us help! Zoom us an email by clicking the "Email" Button to your left. Or call us at 888-281-6467. If you get our Voice Mail, please leave us a message and we'll return your call ASAP! Honest!



    Availability: Usually ships the next business day

    LESSCO Air Vapor Barrier Box 5700-01$3.98, 2/$7.56, 10/$35.90, 30/$101.70, 60/$193.20

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