Pay in installments of $31.29 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 30 - Aug 4
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
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
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 10 reviews
Sort
Product Reviews
★★★★★ 4
EXCELLENT FEET MOISTURE PROTECTION
Size: S (up to size 7)-Beige, Size: S (up to size 7)-Beige
Why did you pick this product vs others?:
I have burns on my feet and needed something that I could put burn creme on and still walk around in with. I tried other silicone footsie but they would teae really easily. So far these are doing really well for this purpose. They are holding their shape too. The only caution I have is the same with all silicone footsies: They can be slippery on wet floors, so also wear with socks over them.
The biggest issues is when they say a size they mean it. The silicone used in these have little give in them, so they won't stretch out and loose their shape. That can be a good thing, or not so good, depending on how well they fit your feet and what your intent is with wearing these. The other issue is if they fit snug around those toes, that tends to be where the first tear in the material will happen. Because of how these are made, the tear is actually more like cracking in the material and once it occurs you won't be able to get much use out of the sock after that. If you are planning to wear them around the house or for long term use, I suggest going up a size or look for the toeless options.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 5, 2025
★★★★★ 3
Silicone socks
Size: M (up to size 9)-Beige
The socks are sized large. The quality of the silicone is good. But they slide around on your feet if you try to walk, making them difficult to use and a bit uncomfortable. Unless you are able to sit for long periods of time the likely will not work well. Recommend looking for a better value.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 27, 2024
★★★★★ 5
Effective
Size: L (up to size 11)-Pink
Fantastic. I put lotion on my feet & wear them when I go to sleep. I often wake up during the night and will remove them to find my feet soft and smooth. They are strong and fit my size 10 womens’ size.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 27, 2026
★★★★★ 1
The shoe size should be smaller 9 is the max and it is still to tight
Size: M (up to size 9)-Beige, Size: M (up to size 9)-Beige
Very tight had to take off my feet in the middle of the night they were cutting off my circulation.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 17, 2026
★★★★★ 5
Great product to keep moisture in
Size: M (up to size 9)-Beige
These are so cool. I was skeptical at first. After an at home pedicure I put lotion on and keep these on for about a few hours. The moisture retention, and comfort and fit or absolutely amazing!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 24, 2025
recommand products
The Bradford Exchange Grandmother and Granddaughter Musical Glitter Globe Plays "Always in My Heart" 6-inches
92.98
The Bradford Exchange Gorgeous Goldfinches Nature's Masterpieces Sculpture Collection Issue #4 Handcrafted Songbirds Paired with Antlers Each Sculpture Individually Painted Realistic Details and Mahogany-Finished Bases7" W x 10" H"
83.98
The Bradford Exchange True Hearts Dreamcatcher Collection Issue #7: 'Mystic Devotion' Wolf Artwork Heart-Shaped Resin Frame with Real Leather Feathers and Beads by Carol Cavalaris 9.5-Inches
56.98
The Bradford Exchange Tranquility Insulated Drinkware Collection: Insulated Water Tumbler Can Cooler Issue #7 Stainless Steel 12 Oz by Thomas Kinkade 7-Inches
49.98
The Bradford Exchange Presenting the Kitten Helpers Accessory Collection: Purr-petual Calendar Issue# 1 by Jürgen Scholz 5.5-Inches
55.00