Campuses, schools, gymnasiums, and facilities with a large number of employees often use lockers for storage of personal belongings. These durable units can range in size from small cubicles to large floor model varieties that provide secure storage with the addition of a lock. Large industrial and commercial facilities also use storage lockers to organize supplies and equipment with lockable options to store valuable items and restrict access to authorized personnel. Many lockers are equipped with shelving and hooks for added versatility.