The 500-watt double-ended bulb is the workhorse replacement lamp for the open-face fixtures that still do heavy lifting on sets, stages, and shops everywhere. This tungsten-halogen tube lamp seats between two end contacts rather than screwing into a socket, the format used by countless open-face heads, cyc-style units, and portable work lights. When one burns out mid-day, production stops until a spare appears, which is exactly why electricians keep several of these in the lamp box at all times.
Double-ended halogen lamps deliver a bright, punchy tungsten output with the crisp warm color that intercuts naturally with the rest of a tungsten package. In an open-face fixture, a fresh 500-watt lamp gives you a strong source for bouncing into foam core or bead board, pushing through diffusion, or throwing hard accents where you need them. The tube format also runs in many utility and work-light housings around the shop, the stage, and the scene dock, so a small stock covers both the lighting package and the practical realities of keeping a crew working after dark.
Handle halogen lamps with gloves or a cloth, since skin oils on the quartz envelope shorten lamp life and can cause premature failure. Let fixtures cool before re-lamping, seat both ends firmly, and confirm your fixture is rated for a 500-watt tube before installing.
• Wattage: 500W tungsten-halogen
• Format: double-ended tube lamp
• Bright, warm tungsten output for open-face fixtures
• Common replacement for open-face heads and work lights
• Handle with gloves; skin oils damage quartz envelopes
• Keep spares in the lamp box to avoid mid-day downtime
500-watt double-ended bulbs are available for purchase at Lightbulb Rentals' NYC, Philadelphia, and Pittsburgh locations. Add spares to any rental order so a blown lamp never costs you a setup. Check your fixture's manual or the old lamp's markings to confirm length and base style match before ordering, and grab at least two so the backup has a backup.
