RubyLux All Red LED Bulb - Size Large – 2nd Generation - 120V for US & Canada red light therapy lamp The Grade B have minor

The Grade B have minor irregularities (usually imperfections in the red tint that is baked into the glass of the bulb)

Unlike other products that require expensive bulb replacements after only a few weeks of use that can’t be done at home

Its circular treatment areas are 15-20 inches in diameter

A smaller version of this bulb is also available

RubyLux All Red LED Bulb - Size Large – 2nd Generation - 120V for US & Canada red light therapy lamp The Grade B have minorThe 2nd Generation RubyLux All Red LED Bulb (size large) is comprised of 18 premium intensity light emitting diodes (LEDs). This bulb is approximately 4. 25 inches in diameter. Its top quality, ultra bright LEDs are in the red light range (at 660 nm). The large LED bulb requires 18W to operate. What makes the RubyLux unique is that it is engineered as a bulb to screw into virtually any US lamp or light socket. RubyLux All Red LED Bulb is the best