Luminaires suitable for unit, row, surface, or suspension mounting. Multiple knockouts for convenient installation. Heavy duty channel of code gauge die formed steel. High reflectance white baked enamel finish. Quarter turn latch secures channel cover for easy wireway access. cULus listed for direct mounting on low density ceilings and damp locations. Self-contained fluorescent emergency power packs can be incorporated, listed for dry locations. Green grounding screw installed in channel. Lampholders may be individually replaced or rewired.