Fig.1: Insert Beam A1 (B1) to Beam A2 (B2), and tighten them with Screw (CC) and Flat washer (BB).
Use Screw (AA) and Flat washer (BB) to tighten Connector (K) to beams.
Fig.2: Use Screw (AA) and Flat washer (BB) to tighten Netting pipe (C1 &C2) to Long beam (A1&A2) and
Short beam (B1&B2).
Fig.3: Insert one end of the beam A1(B1) to another beam B2(A2), and tighten Corner connector J1(J2)
to beam corner with Screw (AA) and Flat washer (BB).