expensive materials such as glass or polycarbonate general agricultural use not without foundation with vinyl or PVC vinyl plastic cover and using a low cost, U-shaped, V-shaped, using the connection socket of the L-shaped frame formed by the roof pillars and floor frame and the frame is easy disassembly and assembly using the nuts and bolts of the ribs, diaphragm spring possible, the whole frame to get the two rings formed perpendicular to both ends to prevent overturn in the wind, and the other one is on the frame can be fixed to the floor and put a peg frame, available cheaply produced plastic retaining clips with vinyl it can be fixed to the frame, and reassembled after dismantling simply by making inexpensive and very economical.
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