Standard lockers are 18 inches deep and 6 feet high. Each locker unit’s height depends on how many tiers the lockers have – a 1-tier locker has one 6-foot-high locker, a 2-tier locker has two 3-foot-high lockers, a 3-tier locker has three 2-foot-high lockers, a 4-tier locker has four 1-foot and 2-inches-high lockers, a 5-tier locker has five 1-foot-high lockers.
