When nature strikes-earthquakes, lightning-it can lead to deadly results. That is why corrugated stainless steel tubing (CSST) was developed to eliminate the danger of rigid gas piping. Twenty years ago, the American National Standards Institute published the first CSST product standard- ANSI LC-1. Since then, over 750 million feet of CSST has been installed in over five million homes in North America.Unlike rigid pipe, Counterstrikea® disperses electrical energy, and is listed by Factory Mutual for seismic resistance. Installed in tens of thousands of homes, Counterstrikea® is the only lightning resistant CSST with the following level of proven performance:Benefits: Up to 400 times more resistant to the damaging effects of electrical energythan yellow CSST. Meets ASTM E84 with respect to flame spread and smoke density. This permitsinstallation in return air plenums. The most complete range of CSST sizes (3/8"- 2") available. No additional manufacturer bonding is required. Lays straighter and pulls easier than competitive CSST. The strength of Counterstrikea® material makes it more crush resistant than competitive brands. Counterstrikea® has higher flow ratingscompared to competitive brands. Installers save money by using a smaller size Counterstrikea® (i.e.. 3/8" Counterstrikea® versus 1/2" other brand). UL Listed for 1, 2, and 4 hour through penetration fire stop ICC systems without removal of the conductive jacket.