At Specified Technologies Inc. (STI) they focus solely on the firestopping business. With over 25 years of firestopping experience, the founders of STI are committed to the development of innovative, reliable firestopping solutions. This is no small task considering the complexity of today's building construction and the increasing use of combustible penetrants. Marketed under the SpecSeal and EZ Path brands , the STI product line is simple in design yet powerful in performance. The result is a low cost, outstanding fire protection system that is easy to install.