Simple and Effective for Protecting Critical Equipment3M Fire Barrier Pass-Through Device Square is an ideal firestop solution for through wall penetrations for cabling. This one-piece, square, hinged metal enclosure features a combination of a fixed firestopping intumescent material and foam smoke seals at each end. The re-enterable device installs quickly and easily for new construction or retrofit applications. It is built for square openings and allows for stacking multiple boxes for easy cable management. It is suitable for blank penetrations, or it hinges over existing cables. It can be secured using optional mounting brackets or firestop sealants (sold separately). When adding or removing cables in the penetration, technicians simply remove and reinstall the foam plugs instead of the entire device. This Fire Barrier Pass-Through Device is designed to provide years of dependable through-penetration firestopping with no reapplication or maintenance.Recommended ApplicationsVital telecom equipment firestop, especially in high-traffic areas where cable is frequently added or removedCables 750 kcmil, Cat 6, fiber optic, 300 pair No. 24 AWG copper telephone cable, thermostatPlastic pipes ccPVC, PVC, ENT, CPVC, FRPP, PVDF, ccABS, ABS, rigid non-metallic, PEXMetal pipes copper, steel, iron, flexible gasInsulated - AB/PVC on copper line setsCombinations metallic, non-metallic and insulated pipes plus cablesBlank penetrationsFully Tested and Approved3M Fire Barrier Pass-Through Device Round are firestop tested to the criteria of ASTM E 814/UL 1479 Standard Test Method for Fire Tests of Penetration Firestop Systems, ASTM E 84/UL 273 Standard Test Method for Surface Burning Characteristics of Building Materials, ASTM E 90 Standard Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements, and ASTM E 413 Classification for Rating Sound Insulation.Reliable and Affordable Fire ProtectionEffective and easy to install, 3M Fire Barrier Pass-Through Device Square are part of 3Ms family of fire protection products that offer the broadest, long-lasting solutions for a variety of commercial, industrial and residential applications. As a trusted leader in the fire protection industry, 3M offers a broad line of affordable products designed to meet the most demanding firestop requirements. Find the solution you need from the industry-preferred line of fire protection products.