Leg cover: With the plinth adjustable screws, every leg can be adjusted to ensure the Lockers are always level, regardless of the surface Spring hinges Hinge and aluminum pillars lock together for added strength and security, using door hinge springs, has a springing function. Shelf supports The shelf support and the aluminum column slide shut together, thereafter it is reinforced with a screw to assure its tightly secured, allowing the shelf support to firmly attached to storage