CamdenBoss 5500 Series Heavy Duty Aluminium Diecast Boxes – CamdenBoss 5500-37, The CamdenBoss Heavy Duty Diecast Natural (121 x 121 x 101mm) 5500 Series is ideal for industrial, control and mechanical engineering applications. Protects sensitive electronic and electrical devices in exceptional environments. CamdenBoss 5500-37 Heavy Duty Diecast Natural 121 x 121 x 101mm 5500 Series