Philips 40W T12 4 ft. Cool White Fluorescent Tubes (10-Pack)

Brighten kitchens, garages, and offices with Philips ALTO Supreme 40W T12 fluorescent tubes. Delivering cool white 4100K light at 2600 lumens, these 4 ft. glass tubes feature medium bi-pin (G13) bases and long 24,000-hour life for reliable, low-mercury illumination.

Key Features:

• Cool White Output: 4100K color temperature provides crisp, neutral light for task areas
• High Brightness: 2600 lumens per bulb for clear visibility in residential or commercial spaces
• Long Life: Up to 24,000 hours average life to reduce replacements and maintenance
• Standard Fit: T12 linear tube with G13 medium bi-pin base for compatible fluorescent fixtures
• Low-Mercury ALTO Technology: More environmentally conscious design than traditional fluorescent bulbs

Specifications Table:

Frequently Asked Questions (FAQ):

Q: What fixtures are these compatible with?
A: They fit 4 ft. T12 fluorescent fixtures that use a G13 medium bi-pin base and Type A ballast.

Q: Are these bulbs dimmable?
A: No, they are non-dimmable.

Q: What is the light color?
A: Cool White, 4100K.

Q: How long do they last?
A: Average life is up to 24,000 hours (about 21.9 years at 3 hours/day).

Q: Can they be used outdoors?
A: They are intended for indoor use and are damp rated.

Crisp, Clean Light that Elevates Everyday Spaces

These slender tubes cast a refined cool white that sharpens lines and brightens work surfaces, instantly refreshing utility rooms and home studios. I love the subtle green-capped detail—an industrial nod that feels thoughtfully engineered. Line them in a classic 4-ft shop fixture above a workbench or in a tidy grid for a gallery-bright garage. Reliable and luminous, they’re the quiet essential of a well-edited, luxurious workspace.

Choose Philips ALTO Supreme T12 tubes today for bright, long-lasting cool white light with fewer replacements.

Warranty