Inlet Expansion Joint (Non-Metallic) , For 2640 Mmdia. Si. Bcb-92 Id Fan, Drg. No. : Sketch No. 25120C-1 ,Outlet Expansion Joint (Non-Metallic) , For 2640 Mmdia. Si. Bcb-92 Id Fan, Drg. No. : Sketch No. 25120C- Quantity: 6