Biostop® 66271 Firestop Gasket - Double Recepticle

Biostop® Firestop Gasket is a single component, fire-rated gasket for use with electrical boxes to comply with the "24 inch rule". Biostop® Firestop Gaskets fit under the cover plate and do not take up volume in the electrical box. It is a labor saving replacement for putty pads in normal applications. STC rating 54, Tested in a UL 411 wall assembly/section to ASTM E90. Patent #6,207,085.

• Easy to install - cost effective
• UL classified as a wall opening protective material
• Great for retrofit applications
• Reduces sound transmission