3M 7100138825 Fire Barrier Cast-in Device 2 Inch

Product Description

The 3M 7100138825 Fire Barrier Cast-In Device 2MCID is an intumescent firestop device engineered to seal 2-inch metallic penetrations through fire-rated concrete floor assemblies. The device mounts directly to the concrete formwork before the slab is poured, creating a formed opening that accommodates mechanical, electrical, or plumbing penetrants once the concrete has cured and forms are stripped. The intumescent material expands under heat, sealing the annular space around the pipe to help contain the spread of fire and combustion gases. Rated for up to 3-hour fire protection, it is used by plumbers, electricians, and mechanical contractors working in commercial or multi-story construction where code-compliant through-penetration firestop systems are required.

This cast-in device is intended for fire-rated concrete floor assemblies in commercial, institutional, and multi-family residential construction. It is suited for installations where metallic pipe, conduit, or similar 2-inch penetrants pass vertically through a concrete slab. The device is positioned and fastened to the form deck prior to the concrete pour, so no core drilling or after-the-fact sleeve installation is required. Mechanical, electrical, and plumbing trades working to IBC or local fire-code requirements rely on this approach to achieve rated through-penetration assemblies with minimal field labor.

Key Features

• Intumescent design expands under heat to seal the annular space around 2-inch metallic penetrations
• Up to 3-hour fire protection rating for fire-rated concrete floor assemblies
• Attaches directly to concrete formwork before the slab pour, eliminating post-pour core drilling
• Creates a formed sleeve opening for mechanical, electrical, or plumbing penetrants
• Weighs 0.96 pounds, making single-trade installation practical without additional support

Compatibility

Designed for use with 2-inch metallic pipe penetrations through fire-rated concrete floor assemblies in code-compliant through-penetration firestop applications.

Installation Notes

Installation is performed by mechanical, electrical, or plumbing contractors prior to the concrete pour. Secure the device firmly to the form deck at the intended penetration location before concrete is placed. After the slab has fully cured and forms are removed, route the pipe or conduit through the formed opening. Verify the completed assembly meets the applicable fire-resistance rating requirements of the local authority having jurisdiction and reference the manufacturer published listing for the specific penetrant type and assembly configuration.

Technical Specifications

• Pipe Size: 2 inches
• Penetration Type: Metallic
• Fire Protection Rating: Up to 3 hours
• Assembly Type: Fire-rated concrete floor
• Weight: 0.96 pounds
• Unit of Measure: Each
• Minimum Order Quantity: 12
• UPC: 00051115165405

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100138825