Philips 28-Watt 4 ft. T5 Linear Fluorescent ALTO Tube Light Bulb, Cool White (F28T5/841)Philips 28W T5 4 ft Cool White Fluorescent Tube This Philips ALTO T5 fluorescent tube delivers bright, cool white 4100K light for residential or commercial fixtures while using just 28 watts. Rated for up to 20,000 hours, it provides 2900 lumens with a frosted glass finish and miniature bi pin base for reliable, efficient general lighting. Key Features: Long Life Efficiency: Up to 20,000 hour lifespan reduces replacement frequency and maintenance

Philips 28W T5 4-ft Cool White Fluorescent Tube

This Philips ALTO T5 fluorescent tube delivers bright, cool white 4100K light for residential or commercial fixtures while using just 28 watts. Rated for up to 20,000 hours, it provides 2900 lumens with a frosted glass finish and miniature bi-pin base for reliable, efficient general lighting.

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Key Features:

• Long Life Efficiency: Up to 20,000-hour lifespan reduces replacement frequency and maintenance
• Bright, Cool White Output: 4100K color temperature with 2900 lumens for crisp task lighting
• Energy Use: Consumes only 28 watts; approximately $3.38 yearly energy cost (3 hrs/day, 11¢/kWh)
• T5 Mini Bi-Pin Fit: Linear T5 form with G13/miniature bi-pin base for compatible fixtures
• ALTO Low Mercury Design: Fluorescent technology with frosted glass and damp-rated performance

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Specifications Table:

Specification	Details
Wattage	28 W
Bulb Type	T5 Linear Fluorescent
Base Type	Miniature bi-pin (G13/Medium Bi-Pin noted)
Length	46 in
Diameter	0.625 in
Color Temperature	Cool White ~4100K
Brightness	2900 lumens
Average Life	20,000 hours (approx. 18.2 years at 3 hrs/day)
CRI	85
Finish	Frosted
Material	Glass
Dimmable	No
Indoor/Outdoor	Indoor; Damp Rated
Ballast Compatibility	Type A
Voltage	120 V
Max Operating Temperature	113°F
Number of Bulbs Included	1
Lighting Technology	Fluorescent
Model Number	F28T5/841/ALTO
Estimated Yearly Energy Cost	$3.38 (3 hrs/day, 11¢/kWh)
Lumens per Watt	103.6
Contains Mercury	Yes

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Frequently Asked Questions (FAQ):

Q: Is this bulb dimmable?
A: No. It is non-dimmable and should be used with standard switching controls.

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Q: What base does it use?
A: A miniature bi-pin T5 base (G13/medium bi-pin listed by retailer). Ensure your fixture supports T5 linear tubes.

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Q: What is the light color?
A: Cool White at approximately 4100K (listed as Cool White 4000K).

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Q: How long does it last?
A: Rated up to 20,000 hours (about 18.2 years at 3 hours per day).

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Q: Where can it be used?
A: For indoor use in residential or commercial fixtures; damp rated.

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Crisp, Architectural Light in a Sleek T5 Profile

This linear T5 casts a cool, crystalline glow that sharpens edges and elevates everyday spaces. I love its slender silhouette and frosted finish—clean, modern, and quietly sophisticated. Line a workspace, laundry, or gallery wall where clarity and color accuracy matter, pairing it with matte metals and pale woods. It’s an effortless essential for polished, luminous living.

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Brighten your space with long-lasting, cool white clarity—add the Philips 28W T5 ALTO tube to your cart today.

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