STANDARD 58420 - CF42/41K/SPIRAL/E26/STD

This is not an LED, incandescent, or halogen lamp—it’s an old-school spiral compact fluorescent lamp (CFL). At 40 or 42 watts, it’s roughly equivalent to a 150-watt incandescent bulb or a 26-watt LED. It features a standard E26 medium screw base and emits a warm white light at 2700 Kelvin.

This lamp contains mercury and must be recycled when it burns out. If you’re replacing an old one, be sure to take it to a proper recycling centre—do not throw it in the garbage. While LED alternatives are available, this CFL may still be the best option for certain applications. However, in most cases, it can be upgraded to LED without any noticeable difference.

This lamp is not dimmable. Check the upgrade section for your LED options.