Atkore's US Tray was established in 2012, as an American manufacturer of made-to-order cable trays that are built per NEMA standards and certified by UL. With non-slip treaded covers to optimize slip resistance, the BKRS Walkable Cable Tray ensures your cables get the best defense. We offer modern, innovative, and technically advanced cable trays, tray covers and wire management accessories, support, and logistics management. Custom manufacturer of cabletrays made from aluminum, fiberglass reinforced plastic (FRP), galvanized and stainless steel materials. Suitable for supporting insulated electrical cables. MP Husky designs and manufactures UL CSA NEMA Cable Tray Systems, UL CSA NEMA Wire Mesh/Basket Cable Tray Systems, and UL CSA NEMA Cable Bus Power Distribution Systems. Founded in 1955, MP Husky originally began operations as.