Bioluz LED Light Bulbs: Bright, Efficient, Reliable - The ultimate in Quality, Efficiency and sustainability. Based in the USABioluz LED brings a new level of performance and style to your home, with light bulbs that blend brightness, energy efficiency, and a pleasing aestheticPick the product that best fits your needs:BR Series bulbs cast a wide light beam angle: 110 degreesPAR Series bulbs cast a narrower beam angle: 40 degreesBR20 & PAR20 flood light bulbs have a 2.5” diameter perfect for 4” recessed cansBR30 & PAR30 flood light bulbs have a 3.75” diameter and fit 5” & 6” recessed cansBR40 & PAR38 flood light bulbs have a 4.75” diameter and fit 6” recessed cansWhen choosing the color temperature of your LED bulbs, consider the following:2700K Warm White are identical to incandescent bulbs3000K Soft White replace halogen bulbs, slightly less yellow than 2700K4000K Cool White has almost no yellow5000K Daylight is designed to capture the bright sun on a summer day2700K & 3000K bulbs are typically used in bedrooms and living rooms or anywhere you want a warm and inviting atmosphere4000K & 5000K bulbs are often seen in kitchens and bathrooms, or anywhere you want a crisp, more modern feeling