The ladder is built with an overhead trolley carriage on which the ladder is mounted. It moves on two tracks that are installed for the length of the aisle and is spaced 4-ft vertically apart. The result is a single ladder that can reach up to 16-ft tall rack shelving with 22-in. of floor space.
Additional features include a 50° stairway with large tread steps that can allow easy ascent and forward descent. Manually propelled, the ladder rolls smoothly along the length of the stockroom aisle on the upper rolling carriage and its swivel casters at the bottom of the ladder. The manufacturer states that the casters are easily activated or deactivated and the carriage itself incorporates a pivoting design to allow easy inward and outward movement of the ladder around the aisle or rack mounted obstacles.
A 30-in. handrail and 42-in. guardrail extends above the ladder for use while standing on the steps or the 27-in. deep top platform. Consumers have a choice of seven to 15 step heights, 16- and 24-in. step widths, and two tread styles to suit a range of applications. The ladders are constructed of 1-in. steel square tube framework. They are designed for use by one person and can support a 300 # load capacity.
Cotterman Company, 130 Seltzer Road, PO Box 168, Croswell, MI 48422. Tel: 800-552-3337. Fax: 810-984-8390.