Are used to maintain the hourly rating of fire rated walls containing electrical outlet boxes and to reduce sound transmission. Only one pad thickness (1/8 inch) is required for a 1 or 2 hour fire rating. No additional putty material needed to plug end of each electrical metallic tube or conduit as its connection to the box. Required by Building Codes in rated partitions where horizontal separation of opposite facing electrical boxes is less than 24 inches (horizontally).
Sound Transmission Class (STC) Rating 60.
Tested in a UL 411 wall assembly/section to ASTM E90.
|Product Code||Size||Qty per Case|
|66490||6″ x 7″ x 1/8″ thick||20|
|66336||7″ x 7″ x 1/8″ thick||20|