T12 linear fluorescent tubes are the largest standard option with a 1.5-inch diameter. Known for their bright, widespread illumination, they are commonly used in older fixtures, garages, and industrial spaces. While being phased out for more efficient options, T12 tubes remain reliable for specific applications. 

3000K (Warm White)  

Slightly brighter than 2700K but still maintaining a soft, warm tone. Commonly used in kitchens, bathrooms, and accent lighting where a gentle yet more functional ambiance is desired. It provides a natural, welcoming warmth without being overly yellow.  

3500K (Neutral White)  

A balanced white light with a more neutral tone that avoids the yellow of warmer temperatures, it is perfect for spaces where clarity and focus are important, such as offices, retail environments, or kitchens. It provides good visibility while maintaining a comfortable ambiance. 

4100K (Cool White) 

This light emits a crisp, bright white tone that is cooler than neutral white but not overly harsh. It is commonly used in workspaces, garages, and healthcare settings, where clear visibility and focus are important. Its clean, professional appearance makes it ideal for areas requiring high attention to detail. 

5000K (Daylight)  

A bright, white light that closely mimics natural daylight, providing excellent color rendering and clarity. Ideal for areas where true-to-life color appearance is important, such as in art studios, kitchens, or task lighting. It also creates an energetic, awake atmosphere, making it ideal for areas where alertness is key. 

6500K (Daylight Blue) 

A cool, bluish light that mimics daylight in its purest form. Often used in areas that require high visibility and detail, such as photography studios, hospitals, or high-precision work areas. It promotes alertness and can even improve mood and concentration, though it may be too intense for home settings.