From the Trane web site.
On Nov. 28, 2007 we successfully completed a plan announced the previous February to separate the three American Standard businesses, leaving each free to concentrate exclusively on the markets it knows best. . Over the course of the year WABCO was spun off as an independent corporation and Bath and Kitchen was sold to Bain Capital Partners. On Nov. 28th American Standard Companies changed its name to Trane, with its stock trading under the new symbol "TT". Our new name reflects our business focus and our leadership in providing integrated heating, ventilation and air conditioning services and solutions.
New chapters in our history of growth through innovation are being written every working day. Our momentum continues to build because -- as our people have said for years -- "it's hard to stop a Trane."