BIOSTOP® Firestop Gasket

gsktgrpIs a single component fire rated gasket for use with electrical boxes when addressing the “24 inch rule”. BIOSTOP® Firestop Gasket is applied by hand, does not take up volume in the electrical box and is a labor saving replacement for putty pads in normal applications. Patent Pending. Sound Transmission Class (STC) Rating 54*. Complies to Required Environmental Exposure Testing of Accelerated Aging and High Humidity as per UL 1479 Fire Test of Through-Penetration Firestops.

SDS: html / pdf
Product Datasheet
List of Approved Systems

US Patent No. 6,207,085; 6,252,167 & 7,348,484

Tested in a UL 411 wall assembly/section to ASTM E90.

c-ul-us1 fm-approved

Product Code Size Qty per Case
66271 Double Receptacle 50
66273 Single Receptacle 50
66275 Double Switch 50
66277 Single Switch 50
66260 Single Decor 50
66261 Double Decor 50