Flush Mounting Dristibution Boards up to 24, 26, 40 modules and with Insulation Class 2. Returnable if requested within 14 days of receipt. For seller's return policy click on seller's name. Various versions of distribution boxes, a large selection of materials, voltage ranges, rated currents and IP protection types / protection classes for indoor and outdoor use, as well as a wide range of accessories and tools such as WAGO plug-in terminals, crimping tools, cable ties, wire end. The distribution box (DB box) helps safely and efficiently distribute electrical power. Today, electrical systems are essential for homes and industries. Type U GBL is a plastic encapsulation formed as a bag, but which is also suited for wall mounting and which can be mounted in a steel box of type LBS 16-6.