This 640*640mm led cabinet is die casting aluminum, mainly used for rental events .this cabinet size has indoor and outdoor type ,indoor cabinet weight is 9kg.outdoor cabinet has 11kg .outdoor cabinet is waterproof and indoor cabinet is not waterproof instead .Indoor cabinet is used for p2.5/4/5 indoor， outdoor cabinet is used for outdoor P4/5/8/10. the module sizes are different according to pixel pitch.It is slim and light weight ,fast assembling and disassembling.It use KCL/G-energy power supply and NOVA receiving card . This led cabinet can be used for rental as well as fixed installation . it is the most cost effective model .when being used for fixed installation , it has advantages compare with traditional iron cabinets .firstly , it use power/signal connectors which is more waterproof and fast then using cables through iron cabinets .secondly , it is light weight ,20kg/sqm lighter than the iron cabinets ,which reduce the load of the steel structure and reduce the cost of steel structure .Thirdly ,it display more flat and better image quality . This led cabinet 640*640mm can be delivered fast in 15-20 days .