90° Internal Tee Assembly – Gusset Type 90° Internal Tee Assembly - Gusset Type Nominal Section Size (mm) Model NumberSizeSize A0505IT5050 A0705IT7550 A0707IT75 75 A1005IT10050 A1007IT10075 A1010IT100100 A1505IT15050 A1507IT15075 A1510IT150100 A1515IT150150 A2010IT200100 A2205IT22550 A2215IT225150 A3015IT300150