18-way waterproof distribution box with side-opening hinged cover for larger distribution needs. ABS base + PC transparent cover, reinforced lock buckle, rated IP65 for outdoor/indoor reliability. Suitable for residential, commercial, and PV combiner applications with fuse, SPD, disconnector, or. The HT-18 Distribution Box is used to protect MCB and other electrical components in a neat finish. It is made of high impact resistant material – HIPS, ABS, ABS-V Fire resistant. With its adjustable din-rail and ultra-large space box for east wiring, the HT-18 is used. mmercial, and industrial settings. Designed to be installed on a flat surface.