Thermobreak LS-F Tube

FM Approved. Simply the Best.

Thermobreak LS-F Tube sets the industry standard for fire performance and is proudly third-party certified by Factory Mutual (FM). FM 4924 is widely regarded as the most severe and realistic fire test for duct and pipe insulation, and Thermobreak LS-F has been specifically engineered to meet these rigorous requirements. When FM compliance is essential, choose the certified leader.