BEP Pro Installer 4 Stud Bus Bar - 500A [777-BB4S-500]500A 4 Stud Buss bar Pro Installer buss bars are designed for flexibility and scalability. The snap out side skirts allow for additional cable entry, and radius ends improve cable routing options. it is easy to link other Pro Installer products to the buss bars because of the common interconnection height in the product line. Compact footprint saves space Clear, polycarbonate covers insulate and protect on three sides Secure cover attachment does not