Uniclass category Ss_35_10_30
Companionway ladder systems (5)
Ss_35_10_30_15
Custom-made fixed ladder, working platforms, walkways and industrial stair components (1)
Ss_35_10_30/510
Industrial stair systems (3)
Ss_35_10_30_40
Permanently-fixed roof ladder systems (1)
Ss_35_10_30_60
Permanently-fixed vertical ladder systems (23)
Ss_35_10_30_62
Working platform and walkway systems (39)
Ss_35_10_30_95