The L at the end is Left side clip 1P 15A Half size, replacement breaker, thin type A Plug-in 120V Challenger, Sylvania, Thomas & Betts, Crouse Hinds or Connecticut Circuit Breaker companies all made this breaker in the past. This brand was also made by Thomas & Betts. Originally made by Crouse-Hinds, Murray. Widely used in residential applications. Alternate no. UBITB-A115L
` Breaker Outlet inspects all of our products prior fulfilling your order. New A115L's come with a 1 year warranty. All Re-Certified A115L's come with a 2 year warranty.