Featuring spring-loaded casters that retract when a user steps onto the ladder, these models move easily around your facility, which makes employees more likely to use them rather than attempt an unsafe way of reaching or climbing. They're available in a gray powder coat and with perforated or serrated tread (serrated offers the maximum slip resistance). Available in 19", 28-1/2", 40" or 50" heights; some models include handrail.