The Kodak Darkroom Lamp is a safelight that can be connected to most any standard bulb-type fixture, though a vertical mounting would work best: it weighs about 600g, and it can exert a fair bit of leverage on the socket, so a horizontal mount may damage the safelight or the fixture. Basically, hang it from the ceiling is what I'm saying. In excellent condition, with OC filter and original box. The included OC filter is suitable for normal darkroom enlarging papers (per Kodak's safelight guide)