A21 LED bulbs have a slightly longer neck and are a quarter of an inch wider, but are intended to be used in the same fixtures as A19 LED bulbs. Many of these bulbs are compatible with existing dimer switches, allowing you to continue to adjust and control the level of brightness, and conserve even more energy and save more money.
Many bulbs here are available in more than one color temperature, allowing you to select a light with a warmer hue, a cooler hue, or something in between as it suits your lighting needs.
New to LED lighting terminology? Check out our Glossary of Terms