90° Four-way Intersection Assembly – Gusset Type 90° Four-way Intersection Assembly - Gusset Type Nominal Section Size (mm) Model NumberSizeSize A0505FW5050 A0705FW7550 A0707FW7575 A1005FW10050 A1007FW10075 A1010FW100100 A1505FW15050 A1507FW15075 A1510FW150100 A1515FW150150 A2010FW200100 A2205FW22550 A2215FW225150 A3015FW300150