SKU: 46445202446

Philips 21-Watt 34 in. Linear T5 Fluorescent Tube Light Bulb Cool White (4100K) Alto (40-Pack)

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Description

Philips 21-Watt 34 in. Linear T5 Fluorescent Tube Light Bulb Cool White (4100K) Alto (40-Pack)Philips linear fluorescent 21 Watt 34 in. T5 cool white light bulb (F21T5 841) is ideal for residential use in garages workshops, basements, as well as for commercial use in general, decorative and architectural lighting. It provides a cool white light. Brightness: 1950 lumens Estimated yearly energy cost: $2. 89 (based on 3 hrs day, 11c kWh. Costs depend on rates and use.) Life: 22. 8 years (based on 3 hrs day) Light appearance: 4100K (Cool White)

Philips linear fluorescent 21-Watt 34 in. T5 cool white light bulb (F21T5/841) is ideal for residential use in garages workshops, basements, as well as for commercial use in general, decorative and architectural lighting. It provides a cool white light.

  • Brightness: 1950 lumens
  • Estimated yearly energy cost: $2.89 (based on 3 hrs/day, 11c/kWh. Costs depend on rates and use.)
  • Life: 22.8 years (based on 3 hrs/day)
  • Light appearance: 4100K (Cool White)
  • Energy used: 21 Watts
  • Lumens per watt: 95.24
  • Ideal for residential use in offices, as well as for commercial use in general, decorative and architectural lighting
  • Great for general purpose lighting - creates a balanced and pleasant light
  • Contains mercury: yes (for more on clean-up and safe disposal, visit: epa.gov/cfl)
  • Contains mercury: yes (for more on ceal-up and save disposal visit: www.epa.gov)


Features
Light Bulb Base Type Bi-Pin
Actual Color Temperature (K) 4100
Indoor/Outdoor Indoor
Returnable 180-Day
Light Bulb Base Code G5
Color Rendering Index (CRI) 85
Average Life (hours) 25000
Lumens (Brightness) 2000
Bulb Type General Purpose
Wattage (Watts) 21
Color Temperature Cool White
Number of Bulbs Included 40
Light Bulb Features No additional features
Light Bulb Shape Code T5
Lighting Technology Fluorescent
Bulb Shape Linear
Bulb Construction Glass
Bulb Diameter (In.) 0.625
Product Length (in.) 34
Approximate Light Bulb Length 3 ft.
Manufacturer Warranty Yes. Please see the "more information" tab for details

Shipping Notes
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Exchange/Return Notes
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SKU: 46445202446

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4.7 ★★★★★
Based on 26 reviews
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Verified Purchase
John Degen
Alexandria, US
★★★★★ 5
Smells amazingly like cherry, but expect a mess under the feeder.
Style: Wild Bird Food, Style: Wild Bird Food
This is a fantastic budget seed blend to keep your backyard feeders full during the busy seasons. I put a banana in the picture next to this massive 10-pound bag for scale, though I wouldn't recommend leaving the fruit out there unless you want to feed the local raccoons instead. The most surprising part of this bag is the smell—it has a very strong, sweet cherry scent right out of the bag that genuinely seems to bring in the local cardinals and blue jays faster than plain seed. THE GOOD: • The cherry flavoring actually works as an attractant, and the sheer volume of seed you get for the price makes this an excellent value for high-traffic yards. • It brings in a huge variety of ground-feeding birds, especially mourning doves and juncos. THE TRADE-OFF: • This is a "value" mix, which means it contains a very high percentage of filler seeds like milo and cracked corn. Finicky songbirds will actively kick the milo out of the hanging feeder to get to the black oil sunflower seeds, creating a massive pile of rejected seed on the ground. THE BOTTOM LINE: A great-smelling, budget-friendly birdseed that attracts a ton of wildlife, provided you don't mind the ground-feeders cleaning up the mess underneath.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
A
Verified Purchase
Amazon Customer
Pawtucket, US
★★★★★ 5
Has attracted a mix of birds.
Style: Wild Bird Food
Great value for the price. Since putting this out, we’ve had so many different kinds of birds visiting our yard. The birds seem to love the mix, and it has definitely brought more activity to our feeders. I also compared prices before purchasing, and this was very comparable to similar products and bag sizes. Overall, it’s a quality bird seed at a fair price, and I would absolutely buy it again
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
A
Verified Purchase
Angela Felan
Houston, US
★★★★★ 5
Great for local birds
Style: Wild Bird Food
This bird seed has been a great find for attracting birds here in North Texas! Within just a couple of days of putting it out, we started seeing a noticeable increase in activity. It brings in a nice variety too—cardinals, finches, doves, and even the occasional blue jay. The mix seems fresh and well-balanced, with very little waste. I also appreciate that it doesn’t have a ton of filler seeds that birds usually ignore. Everything in the blend actually gets eaten, which makes it feel like a better value. It holds up well in our unpredictable Texas weather, and I haven’t had issues with mold or clumping. Overall, if you’re looking to attract a wide range of local birds and keep your feeder busy, this is definitely worth trying!
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Reviewed in the United States on April 28, 2026
C
Verified Purchase
Cat
West Palm Beach, US
★★★★★ 5
Great Bird Attraction & Solid Value for the Price
Style: Wild Bird Food
This bird seed has been a great addition to our yard. It attracts a wide variety of birds + they seem to really enjoy the cherry flavor.. it doesn’t sit untouched like some other mixes I’ve tried. The quality is solid, with a good mix that looks fresh and not overly dusty. It also seems easy for the birds to digest, as they keep coming back + there’s minimal waste left behind. I mean.. enjoying the bird without the poop - WIN! The 10-pound bag is a great size.. enough to last a while without constantly needing to restock. For the quantity you get, it’s definitely good value for the money. Overall, a reliable choice if you’re looking to attract more birds without overspending. If your debating.. BUY NOW
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Reviewed in the United States on April 2, 2026
B
Verified Purchase
buttercup
Natrona Heights, US
★★★★★ 4
Good price
Style: Wild Bird Food
Birds love most of this, but the small filler they just leave this behind.
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Reviewed in the United States on May 30, 2026

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