An airtight installation box for outlets in locations that interfere with the interior airtight layer. Good for Interior use. >> Read More

Quantity Discounts
1-19 >> 20+
$3.90 >> $3.30

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INSTAABOX is made from stretchable PE, which is vapor retarding and can be used where there is no space (service cavity) between the airtight layer and the interior finish (sheetrock).


  • Perm rating < 0.3 perms, Sd value > 10 m
  • It provides and airtight cavity in which you can install light switches and electrical outlets. Cables, BX and wires (max ¾”/20mm) can be guided through punched holes (size hole to app. 60% of cable size) in the box.
  • The flexible material of the box will air-seal the penetration permanently airtight. Since the box is made out of a single homogeneous material, one can make penetrations at any point of the box.
  • It’s class III vapor retarding properties protect the insulation against vapor drive, while allowing inward drying in the summer.
  • Dimensions:

  • Size of box interior: 10.2” x 5.1” (260 mm x 130 mm)
  • Box depth: 2.2” (55 mm)
  • Lip size: 1.2” (30 mm)
  • Download Links:

  • Product Specification (PDF)
  • Application Guide
  • Product Specification (PDF)
  • Application Guide
  • Elegant Solutions to Deal with Penetrations for the Electrical Service Panel
  • How To Stay Airtight Without A Service Cavity