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BOSS® 333 Gap Filling Foam Genius Gun

A ready to use, multi-purpose, polyurethane foam that expands to three times its original volume upon contact with air. GENIUS GUN PATENT NO. 1010639

  • Use for insulating around pipes, cables and blank openings, gaps and cracks
  • Weatherproofs against wind and moisture
  • Can be cut, sanded and painted

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