Sentry Fire-safe model s7771 commercial safe Fire-Safe® Model S7771 Commercial Safe, 25-1/2 x 23-1/2d x 39-7/8h, Light Gray Carries the Underwriter’s Laboratories Classification. In the fire endurance test, products are subjected to fire at teperatures of 1,700ºF. One-hour UL fire tested. Large-capacity safe includes adjustable shelf, built-in wheels for mobility and interior locking drawer. Electronic lock and tubular key. Two adjustable shelves. Exterior: 25-1/2w x 23-1/2d x 39-7/8h.