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LESSCO Air Vapor Barrier Box LESSCO Air Vapor Barrier Box
Low Energy Systems Supply 
LESSCO Air Vapor Barrier Box
+ Click to Enlarge
Exterior air infiltration and interior air exfiltration occurs through electrical boxes in exterior walls and ceilings. Warm air exfiltration can carry water vapor that can condense in the wall and/or attic cavity leading to rotting and mold growth - as well as increasing the heating load during the heating season. This air vapor barrier box is designed to attach to a wall or ceiling frame member and can contain up to three conventional electrical boxes. Once installed, use silicon sealant or low expansion foam to seal the box where the wires pass through into the wall cavity and tape the vapor barrier to the box flange with contractor's sheathing tape. This will eliminate the passage of air and moisture through electrical boxes. The interior of each box is 6.5 inches x 7.5 inches x 2.9 inches deep, and this model has LESSCO's new patented hinge feature.
  • Instructions: English
  • Origin: United States
  • Manufacturer: Low Energy Systems Supply Company
 Displaying 1 to 1 (of 1 products)   Result Pages:  1  
 PART #+      ITEM NAME   PRICE   AVAILABLE    
 5700.01 (404)   LESSCO Box  LESSCO Box   $3.25   618 
 
 Displaying 1 to 1 (of 1 products)   Result Pages:  1  
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The utilities & energy efficiency providers below work with EFI to extend product rebates through EFI online stores. Offers are grouped by those for residential customers and this for non-residential customers.

RESIDENTIAL

California
-Southern California Edison
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Connecticut
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-Ameren Illinois
Kentucky
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Massachusetts
-Cape Light Compact
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Missouri
-Ameren Missouri (electric)
-Ameren Missouri (gas)
New Hampshire
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-Unitil
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-American Municipal Power
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Washington
-Puget Sound Energy
West Virginia
-American Electric Power
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N0N-RESIDENTIAL

Illinois
-Ameren Illinois
Indiana
-Duke Energy
Kentucky
-Duke Energy
Massachusetts
-National Grid (gas)
Missouri
-Ameren Missouri (gas)
New Hampshire
-Liberty Utilities
-NH Electric Cooperative
-Public Service of NH
-Unitil
New Jersey
-NJ Clean Energy Program
North Carolina
-Duke Energy
Ohio
-Duke Energy
South Carolina
-Duke Energy

For a listing of our other online stores view efi.org/consumer/clients.


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Energy Federation (EFI)
Southborough Massachusetts USA
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