Introducing the fire-rated, concealed 8300 series, a compact, high-performance product for use with cylindrical locksets. Designed for fast, easy installation, the 8300 fits into a standard 1" ANSI/BHMA A156.115 dustbox, with little or no modification to the frame, and offers vertical adjustability to accommodate door sag and misalignment. Best of all, this unique electric strike complies with NFPA 80-07 guidelines for retrofit into fire-rated frames, so you can save money, save time, and save lives!