... 3.OEM service 4.24h on service BS4568 junction box class 4 and class 3 conduit's fittings are produced comply ... - Standard: BS4568 1:1970 Class 4 and Class 3. Offering Shengshihuaneng Malleable Conduit Junction Box : 1) Available types: 1-way, ... 2-way, 3-way, 4-way, Terminal Box, Intersection Box, Through Box, Tee Box, Angle Box. 2) Available sizes: 20mm and ...