The junction boxes are supplemented by a range of optional equipment, making installation quick and easy. The knock-out membranes operate as. Electrical Junction Box, Ventilated Design, Cable Grommets, Indoor/Outdoor Use with Mounting Panel & Hinged Cover. IP66/67 waterproof polycarbonate enclosure with knockouts. Choose from a wide range of submersible junction boxes, including wall mount enclosures with folded lift-off covers or hinged covers, stainless steel captive bolt hardware and (aluminum / stainless. JUNCTION BOX 410X315X153MM, IP65 EC485C7 Waterproof junction boxes - large product range in ELMARK. Available in ABS, PVC, and metal materials. Certified by CE, ROHS, and ISO9001.