Designed to produce minimal heat and maximum brightness but consume very little power, this 9.5W R63 LED Reflector serves as a direct, retrofit replacement for grossly inefficient 54W filament and halogen reflector bulbs.You\'d be forgiven for mistaking this bulb for those it is designed to replace though, with a frosted, anti-glare refactor both obscuring its Everlight LED components and diffusing the warm white light they produce evenly and effectively. This enables the bulb to retain a reassuringly familiar aesthetic but offers all of the benefits of LED technology, from increased efficiency and longevity to cooler running temperatures and drastically reduced energy costs.Please visit the manufacturer\'s website for up-to-date dimmer switch compatibility lists for this Integral LED R63/R64 Reflector light bulb before purchase.To find the answers to some common questions about LED dimming, please read our guide Dimming for Dummies.