allowable height for air freight of less than 160 cm the four respectively individually separable side walls 3 6 are rectangular and each provided with a tongue and groove system along its periphery for coupling each other and or with the base 2 and or the cover 7 the base 2 is shaped like a euro pallet the outer surfaces of the separable side walls 3 6 and the cover 7 are provided with deepened grooves 8 for mounting of webbing load restraint assemblies the deepened grooves 8 of the separable side walls 3 6 are respectively linked to deepened grooves 8 of the cover 7 along top edges of the cover 7 the deepened grooves 8 are covered with rectangular edge protection 9 after accommodation of the webbing load restraint assemblies the side walls 3 6 may as well be provided with lugs and may be sealed with cable seals fig9 fig2 8 corresponding features are referred to with the references of fig1 first of all before assembly of the modular insulated container 1 the base 2 with a euro pallet 10 is loaded with goods s fig5 subsequently the side walls 3 6 are mounted separately on the base 2 and are fixed together.