3M 7100138821 Fire Barrier Cast-in Device 2 in

Product Description

The 3M 7100138821 is an intumescent cast-in firestop device designed to protect 2-inch non-metallic pipe penetrations through fire-rated concrete floor assemblies. It installs directly to the formwork before the concrete slab is poured, creating a sleeve opening that accepts mechanical, electrical, or plumbing penetrants once the slab has cured and forms are stripped. The intumescent material expands when exposed to heat, sealing the annular space around plastic pipe to restrict fire and smoke passage. Rated for up to 3-hour fire protection, this device is used by fire-stop installers, general contractors, and licensed mechanical or plumbing contractors on commercial and multi-family residential construction projects.

This cast-in device is suited for new concrete floor construction where non-metallic piping must pass through a fire-rated slab assembly. It eliminates the need for a separate sleeve or post-pour core drilling in many applications. Typical installations include high-rise residential, healthcare, and commercial buildings where IBC and NFPA 101 compartmentalization requirements apply. The device handles 2-inch plastic pipe or conduit penetrations and is installed prior to concrete placement, making it a pre-pour solution for firestopping.

Key Features

• Intumescent construction expands under heat to seal 2-inch plastic pipe penetrations
• Rated for up to 3-hour fire protection in concrete floor assemblies
• Attaches directly to concrete formwork before slab pour for clean integration
• Eliminates post-pour core drilling in compatible new-construction scenarios
• Accepts mechanical, electrical, or plumbing penetrants after slab cure
• Sold individually, minimum order quantity of 12 units

Compatibility

Designed for use with 2-inch non-metallic pipe or conduit penetrations through fire-rated concrete floor assemblies in new construction applications.

Installation Notes

Installation is performed by qualified contractors prior to concrete placement. Secure the device firmly to the form panel so it does not shift during the pour. After the slab cures and forms are stripped, route the pipe or conduit through the created opening per the applicable listed system instructions. Verify the installed assembly meets the required fire-resistance rating under IBC or the authority having jurisdiction before covering or concealing.

Technical Specifications

• Pipe Size: 2 inches
• Penetrant Type: Non-metallic (plastic) pipe
• Assembly Type: Fire-rated concrete floor
• Fire Protection Rating: Up to 3 hours
• Weight: 0.95 pounds
• Unit of Measure: Each
• Minimum Order Quantity: 12
• UPC: 00051115165368

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100138821