The modular, interlocking design of the CycleSafe ProPark bike locker offers a wide range of bicycle parking capacity. ProPark Bike Lockers can be extended into bike locker banks of two, three, four — even twenty lockers.
Each bike locker includes a diagonal partition that forms two space-efficient triangular stalls to secure one bike per each door. Lockers come standard with a door on each side, so a single locker parks two bikes
https://cyclesafe.com/product-category/bike-lockers/