Philips 40-Watt 4 ft. ALTO Supreme Plus High CRI T12 Fluorescent Tube Light Bulb, Cool White 4100K (30-Pack)Philips 40W 4 ft T12 Cool White Fluorescent Tubes (30 Pack) These Philips ALTO Supreme Plus 4 ft T12 fluorescent tubes deliver crisp 4100K cool white light with a high 87 CRI for clear, accurate illumination. Each 40W glass tube produces 2550 lumens and lasts up to 24,000 hours, ideal for commercial and residential general lighting. Key Features: High CRI Cool White: 4100K color temperature with 87 CRI for accurate, bright task lighting Long Life

Philips 40W 4-ft T12 Cool White Fluorescent Tubes (30-Pack)

These Philips ALTO Supreme Plus 4-ft T12 fluorescent tubes deliver crisp 4100K cool white light with a high 87 CRI for clear, accurate illumination. Each 40W glass tube produces 2550 lumens and lasts up to 24,000 hours, ideal for commercial and residential general lighting.

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Key Features:

• High CRI Cool White: 4100K color temperature with 87 CRI for accurate, bright task lighting
• Long-Life Performance: Up to 24,000-hour average life to reduce maintenance
• Reliable Output: 2550 lumens per bulb; 63.8 lm/W efficiency
• Standard Fit: T12 linear tube with G13 medium bi-pin base for Type A ballast fixtures
• ALTO Technology: Low-mercury design; damp-rated for indoor commercial or residential use

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Specifications Table:

Specification	Details
Wattage	40 W
Length	48 in (4 ft)
Diameter	1.5 in
Bulb shape	T12 linear
Base type	G13 medium bi-pin
Color temperature	Cool White 4100K (listed as 4000K on site)
Color Rendering Index (CRI)	87
Lumens	2550 lm
Lumens per watt	63.8 lm/W
Average life	24,000 hours
Ballast compatibility	Type A
Dimmable	No
Material	Glass
Finish	Frosted
Indoor/Outdoor	Indoor; Damp Rated
Operating temperature max	113 °F
Voltage	120 V
Number of bulbs included	30
Contains mercury	Yes
Control type	Switch
Lighting technology	Fluorescent
Bulb color	White
Wattage equivalence	40 W
Estimated yearly energy cost	$4.82 (3 hrs/day, 11¢/kWh)

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Frequently Asked Questions (FAQ):

Q: Are these bulbs dimmable?
A: No. These T12 fluorescent tubes are non-dimmable.

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Q: What ballast do they require?
A: They are compatible with Type A fluorescent ballasts designed for T12 lamps.

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Q: What is the color and brightness?
A: Cool White 4100K color temperature with 2550 lumens per bulb and 87 CRI.

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Q: Where can these be used?
A: For indoor, damp-rated applications in commercial or residential fixtures using 4-ft T12 lamps.

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Q: How many bulbs are included?
A: 30 bulbs are included in this pack.

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Crisp, Cool Illumination for Elevated Everyday Spaces

The cool white glow of these linear tubes brings a refined clarity to workshops, kitchens, and utility spaces. I love the sleek, frosted finish—quietly luxe while delivering true-to-color light that keeps surfaces feeling fresh and functional. Line a series above a workbench or within a soffit to create a uniform ribbon of brightness. This is the kind of effortless, dependable lighting that underpins a modern, polished home.

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Brighten your space with long-lasting, high-CRI cool white light—add this 30-pack to your cart today.

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