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Enjoy fast and free shipping on all orders over $89! Contact us (855) 424-4376

DESCRIPTION BOSS® 813 can be used on any commercial or residential construction where the code calls for a UL system for penetration of wires, cables and metal pipes through drywall, concrete or wood. (Please consult the UL directory for a full list of approved systems). BOSS® 813 can also be used as a fireblock/draftstop in non-fire rated construction. BOSS® 813 prevents the spread of fire, smoke and toxic gasses from one compartment to another, while still maintaining the integrity of the Firewall. BOSS® 813 has excellent insulation and acoustic properties, and is also paintable (after inspection). BOSS® 813 meets or exceeds all building codes including the new International Building Code. BOSS® 813 has been tested as a Through Penetration Firestop for 1 & 2 hour fire rated construction and is listed to UL 1479 (ASTM E-814) BOSS® 813 must be installed as tested to achieve a 1 or 2 hour rating. Visit www. for a “Complete Firestop Systems Guide” and view the systems as they were tested for proper installation.


• Foam only UL Systems available

• Will adhere to almost any substrate

• Installed in seconds, reducing labor costs by up to 90%

• Ideal for hotels, hospitals, prisons, condominiums, single and two family homes

• Paintable

• Can be used on vertical or horizontal applications

• Excellent acoustic and thermal insulation

• Unaffected by moisture or humidity after curing • VOC Compliant / CFC Free

• Triple expanding

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