The 6 tread industrial swingback 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 closed height m 155 open height m 146 rungstreads 6 material aluminium usage type heavy duty warranty 5 year standard bs 2037 class 1 platform height m 146 open depth m 106 weight kg 6please note number of treads includes the top platform the im