Arrow PEC910-AL Aluminum Patented Permanent End Cap Exit Device, specially designed to work with all Arrow S1150 and S1250 trims, and it's perfect to replace or upgrade existing exit devices. This panic bar is BHMA Grade 1 certified. This exit device is UL and CUL Listed for accident hazard (panic) standards, and it complies with life safety code NFPA 101. The Chassis is made of stamped steel materials, the cassis cover is made of cast zinc, a seamless one piece design. This exit device fits doors 1-3/4" inches thick, for doors 36" inches wide, and with a 4-1/2" minimum stile. This exit device features a hex type hold down dogging, a stainless steel latchbolt, and an ES90 Strike.