The 10 Series Rim Exit Device is super-heavy-duty and fire exit hardware for use on all types of single and double doors with mullions. The patented mounting plate and strike locator system ensures the easiest and most accurate installation of panic hardware available.All exposed surfaces are finished over stainless steel with PVD, an environmentally-friendly finishing process Tested beyond 1,000,000 cycles - Twice the cycling required for Grade 1 UL testing Non-handed Stainless steel deadlocking, Pullman-type latch bolt Field sizeable 1/8 turn hex or cylinder dogging