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The only airtight enclosure system for electrical junction boxes:

patent-pending, inexpensive, and ready to ship.

FREE SHIPPING on all orders over $150.00

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Choose Your BOX SHELL
Single BOX SHELL
Single BOX SHELL
Insulates a single outlet box or switch box.  Works well for data connections as well.
$2.39
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Double BOX SHELL
Double BOX SHELL
Insulates a double outlet box OR ROUND BOXES!!! The only device that seals around the wires, all the way around the box and fills the void behind the box.
$2.49
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Triple BOX SHELL
Triple BOX SHELL
Insulates a triple outlet/switch box.  This is a great product to have as an extra bit of material to make a custom surround for a unique circumstance.  
$2.79
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Ready to Seal It correctly?

Join contractors and builders across America who trust BOX SHELL to meet the highest energy performance standards without the extra labor or cost.

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Default Title 1 - Single BOX SHELL - BXS1001 $2.39
Default Title 2 - Double BOX SHELL - BXS1002 $2.49
Default Title 3 - Triple BOX SHELL - BXS1003 $2.79