Reflector compact fluorescent lamps (CFLs) are energy-efficient bulbs designed to direct light forward, making them ideal for recessed lighting, track lighting, and outdoor floodlights. 

BR38 

BR38 bulbs are bulged reflector lamps with a diameter of 4.75 inches. They provide wide beam angles, suitable for general lighting in large areas. 

PAR20 

PAR20 lamps are parabolic aluminized reflectors measuring 2.5 inches in diameter. They produce a focused beam, ideal for accent lighting and highlighting specific areas or objects. 

PAR30 

PAR30 bulbs have a diameter of 3.75 inches and offer a medium-sized, focused beam. They are commonly used in track lighting and recessed fixtures for both residential and commercial applications. 

PAR38 

With a diameter of 4.75 inches, PAR38 lamps provide a broad, intense beam, making them suitable for outdoor security lighting and large indoor spaces 

R20 

R20 bulbs are reflector lamps with a 2.5-inch diameter, offering a soft-edged, wide beam. They are ideal for general lighting in small spaces and are often used in recessed ceiling fixtures. 

R30 

R30 lamps have a diameter of 3.75 inches and provide a wide beam spread, suitable for general illumination in medium-sized areas, such as living rooms and kitchens. 

R40 

R40 bulbs are larger reflector lamps with a 5-inch diameter, delivering a broad beam of light. They are commonly used in high-ceiling areas and large rooms requiring substantial illumination.