Rectangular junction box, commonly known as a Handy box, is a rectangular-shaped electrical enclosure used to house and protect electrical wiring connections, such as splices, outlets, switches, or other devices. Electricians and contractors use boxes when installing electrical and wiring systems to comply with NEC (National Electrical Code) requirements. Standard electrical boxes enclose. This junction box has 10 x 20mm entries! Made from tough, impact and corrosion resistant engineering plastic. Hinged lid (Available in black or transparent polycarbonate). Junction box accommodates 12 IK5 Kwikblok® terminals (see accessories below). Featuring multiple knockouts for conduit or cable entry, mounting ears or brackets for. Get free shipping on qualified Rectangle Electrical Boxes, Conduit & Fittings products or Buy Online Pick Up in Store today in the Electrical Department. The quick brown fox jumped over the lazy dog.