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. bossproducts.com for a “Complete Firestop Systems Guide” and view the systems as they were tested for proper installation.