Robust anti-theft security closure system for trucks, semi-trailers, refrigerators, isothermal or closed boxes intended for transport, with double door and double fault. Manufactured in stainless steel AISI-304 standard, the finish of it is electro polished steel, the locking light bulb consists of a central anti-drill axis. Minimum dimension: 245 mm. Maximum dimension: 335 mm. Weight: 2'20 kg