3M 7100138823 Fire Barrier Cast-in Device 4 Inch

Product Description

The 3M 7100138823 is an intumescent cast-in firestop device designed to protect 4-inch metallic penetrations through fire-rated concrete floor assemblies. It is installed by attaching directly to the forming system before the concrete slab is poured. Once the slab cures and forms are removed, the device creates a finished sleeve opening through which mechanical, electrical, or plumbing penetrants can be routed. The intumescent material expands under heat, sealing the annular space around the penetrant to provide up to 3-hour fire protection. This device is installed by licensed contractors working under fire-stopping, mechanical, plumbing, or electrical scopes.

This cast-in device is suited for new construction and major renovation projects where fire-rated concrete floor assemblies require through-penetration firestop solutions for 4-inch metallic pipe or conduit. It is particularly useful on multi-story commercial and residential construction sites where the firestop sleeve must be positioned before the slab pour, eliminating the need for core drilling or retrofit firestop collars after the fact. Sold individually, with a minimum order quantity of 6 units per order.

Key Features

• Intumescent construction expands under heat to seal metallic penetrations and block fire and smoke passage
• Designed for 4-inch metallic pipe or conduit penetrations through concrete floor assemblies
• Provides up to 3-hour fire-resistance rating
• Pre-pour installation — attaches directly to the form before the concrete slab is poured, no core drilling required
• Accommodates mechanical, electrical, and plumbing penetrants routed after slab cure

Compatibility

Designed for use with 4-inch metallic penetrations through fire-rated concrete floor assemblies in commercial and residential construction applications.

Installation Notes

Installation is performed by qualified contractors prior to concrete placement — the device is secured to the form deck at the required penetration location before the slab is poured. After the slab cures and forms are stripped, the opening is ready for the penetrant to be routed through. Verify the installation assembly and fire-resistance rating against the applicable building code and local authority having jurisdiction (AHJ) requirements before installation. Do not modify the device or apply coatings that could impair intumescent function.

Technical Specifications

• Penetration Size: 4 inches
• Penetration Type: Metallic
• Assembly Type: Fire-rated concrete floor
• Fire Protection Rating: Up to 3 hours
• Weight: 1.74 pounds
• Unit of Measure: Each
• Minimum Order Quantity: 6
• UPC: 00051115165429

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100138823