PO junction boxes are equipped with flexible PE glands, and PG screw-type glands can be installed. PIN junction boxes are equipped with fixed bushings located in the side walls of the boxes, with internal gradations that can be trimmed to suit the cable diameter. PO and PIN junction boxes are most often used in single-phase installations and feature a reusable clamping cover, allowing for quick and easy opening and closing. Moisture protection is provided by an IP44 rating.