3M 7100006140 Fire Barrier Composite Sheet 28x52 in

Product Description

The 3M 7100006140 is a thin, one-part composite firestop sheet engineered to seal blank openings and large penetrations in fire-rated construction assemblies. Sold as a single sheet measuring 28 inches x 52 inches, it weighs 32 pounds and provides a ready-to-install solution for firestopping applications involving cable trays, electrical conduit, and HVAC ductwork. The composite construction eliminates the need for multi-component systems, reducing labor time and material staging on the job. Fire protection contractors and mechanical trades typically specify this product where rated wall or floor assemblies require listed firestop protection at larger penetration openings.

This sheet is suited for use in both commercial and institutional construction where building codes require rated firestop systems at penetrations through fire-rated floors, walls, and partitions. Typical applications include large cable tray penetrations, bundled conduit runs, and HVAC duct openings passing through two-hour or four-hour rated assemblies. Its one-part format is well suited to projects where installers need consistent, repeatable performance across multiple penetration locations without mixing or curing delays.

Key Features

• One-part composite system — no mixing, no two-component prep required
• Covers blank openings and large penetrations up to the sheet dimensions
• Compatible with cable tray, conduit, and HVAC ductwork penetrations
• Designed for use in fire-rated floor and wall assemblies
• Single-sheet format simplifies field inventory and installation staging

Compatibility

Designed for firestopping blank openings and large penetrations — including cable trays, conduit bundles, and HVAC ductwork — through fire-rated wall and floor construction assemblies.

Installation Notes

Installation should be performed by a qualified fire protection contractor or licensed mechanical or electrical trade familiar with listed firestop systems and applicable building code requirements. Before beginning work, de-energize all cables and circuits in the penetration area and coordinate with the general contractor to confirm the rated assembly construction. Follow the manufacturer's listed system details and applicable IBC or local fire code requirements for opening size limits and penetration configurations. Do not substitute materials or modify sheet dimensions without verifying compliance with the listed firestop system details.

Technical Specifications

• Sheet Dimensions: 28 inches x 52 inches
• Weight: 32 pounds
• System Type: One-part composite
• UOM: Each
• UPC: 00051115082603

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100006140