3M 7000059391 Intumescent Fire Strip 1/16x1/2 Inches 50 Ft

Product Description

The 3M 7000059391 is a flexible intumescent fire-sealing strip designed to block the passage of fire, smoke, and toxic gases through gaps in door frames and glazing assemblies. When exposed to elevated heat during a fire event, the strip expands and forms a rigid char that seals the air space, slowing the spread of flames and noxious combustion byproducts into adjacent areas. The strip ships in a 50-foot roll, measures 1/16 inch thick by 1/2 inch wide, and features a factory-applied adhesive backing for fast, tool-free installation on prepared surfaces. Fire-stop contractors, glaziers, and door hardware installers are the primary tradespeople who specify and apply this product.

This intumescent strip is applied to the air gap between door leaves and frames in fire-rated door assemblies, and to the perimeter of fire-resistant glazing installations. It is suited for both new construction and retrofit applications where passive fire protection is required. The adhesive backing allows direct application to metal, wood, or composite door frame substrates without mechanical fasteners. It is black in color and sized to fit standard fire-door rebate dimensions common in commercial and residential construction.

Key Features

• Expands under heat to seal gaps and form a char barrier against fire and smoke
• Adhesive-backed for direct application without additional fasteners or adhesives
• 1/16 inch x 1/2 inch profile fits standard door frame rebate and glazing channel dimensions
• 50-foot roll length reduces splices and speeds installation on full door sets
• Black finish blends with painted or anodized door frame finishes
• Suitable for both door frame and fire-resistant glazing perimeter applications

Compatibility

Designed as an OEM-style passive fire protection solution for fire-rated door frame assemblies and fire-resistant glazing installations where an intumescent seal strip is required by the door or glazing system manufacturer.

Installation Notes

Installation is typically performed by fire-stop contractors, glaziers, or certified door hardware installers in accordance with the door or glazing system manufacturer's listed instructions and applicable fire code requirements. Clean and dry all substrate surfaces before applying the adhesive-backed strip to ensure full adhesion. Cut the strip to length with a utility knife and press firmly into the frame rebate or glazing channel. Consult the authority having jurisdiction and applicable building codes for inspection and documentation requirements on fire-rated assemblies.

Technical Specifications

• Thickness: 1/16 inches
• Width: 1/2 inches
• Length: 50 feet
• Color: Black
• Backing: Adhesive-backed
• Weight: 1.3 pounds
• Unit of Measure: Each
• Minimum Order Quantity: 10
• UPC: 00051115116261

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000059391