The 3 tread industrial platform step is constructed from heavy duty channel section stiles with riveted treads this no nonsense aluminium platform step is a simple yet reliable performer for daily use in harsh environments this step features all the engineering points of the swing back step with the addition of a checker plate platform step closed height m 135 open height m 135 rungstreads 3 material aluminium usage type heavy duty warranty 5 year standard bs 2037 class 1 platfo