Lay-in straight section wireway, NEMA type 12. 16 gauge steel covers and bodies. ANSI 61 gray polyester powder finish inside and out over pretreated surfaces. Seams continuously welded and ground smooth. No holes or knockouts. Smooth, rounded edges on all sections and fittings. Butt hinges and strong latches. Quick-release cover latches. Oil-resistant gasket and adhesive. Gasketed quick-release flat sealing plate.