Two complete ranges of supports and brackets : light duty S100U ( 100 Kg) and medium duty S150U ( 150Kg). Multi-purpose range for both sheet metal ventilated cable trays or basket trays. Multi-function brackets for all ca......Two complete ranges of supports and brackets : light duty S100U ( 100 Kg) and medium duty S150U ( 150Kg). Multi-purpose range for both sheet metal ventilated cable trays or basket trays. Multi-function brackets for all cases : wall , ceiling, floor , channel or rail mounting. Safe and simple sustems for low installation costs.