Hallowell’s One-Wide Six-Tier Lockers with Electronic Lock feature electronic locks with four-digit codes that can be programmed for day use or permanent mode. In day use mode codes are determined by temporary users as lockers become available, and in permanent mode codes are pre-assigned to specific lockers. The locks are equipped with eight-digit master and sub-master codes for two levels of security, and powered by two AAA batteries providing over ten thousand uses. These sturdy lockers are constructed of 16-gauge steel frames and 24-gauge steel body panels. Openings provide plenty of space for storing books, lunches and small bags. Ventilated doors have piano hinges to prevent pinched fingers and keep doors firmly attached to locker frames. This model ships assembled.