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Item #:
49574469
Sylvania 21371 - F40CWX 2PK Straight T12 Fluorescent Tube Light Bulb
Item #:
49574469
XCD 97
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Order now and get it around Saturday, August 22
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High-performance fluorescent light bulbs with a long average lifetime and excellent color rendering.
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What Stands Out
Energy Efficiency
The Sylvania F40CWX fluorescent tubes offer energy-efficient lighting, reducing electricity costs while providing consistent and bright illumination ideal for commercial and residential spaces.
Long Lifespan
These bulbs have a long operational life, minimizing the need for frequent replacements and ensuring a reliable performance that keeps environments well-lit for extended periods.
Bright White Light
With a color temperature of 5000K, the Sylvania tubes deliver a bright white light that enhances visibility, making them perfect for workplaces, garages, and task-oriented environments.
Product Details
| Light Type | Fluorescent |
| Additional Features | Energy Efficient |
| Wattage | 40 watts |
| Bulb Shape Size | T |
| Bulb Base | G13 |
| Incandescent Equivalent Wattage | 9 Watts |
| Specific Uses For Product | reading, photography |
| Light Color | Cool White |
| Voltage | 120 Volts |
| Color Temperature | 4100 Kelvin |
| Indoor Outdoor Usage | Indoor |
| Power Source | AC |
| Color Rendering Index | 2150 |
| Power Consumption | 40 Watts |
| Light Source Type | Fluorescent |
| Light Source Wattage | 40 Watts |
| Accepted Voltage Frequency | 100 to 120 Volts and 60 Hertz |
| Control Method | App |
| White Brightness | 2500 Lumens |
| Smart Home Compatibility | Not Smart Home Compatible |
| Light Output Maximum | 2500 Lumens |
| Controller Type | Push Button |
| Connectivity Technology | Normal bulb |
| Brand Name | SYLVANIA |
| Number of Items | 1 |
| Model Name | 21371 |
| Model Number | 10 80 DHPHT NE/ST |
| Manufacturer | Sylvania |
| UPC | 046135213717 |
| Manufacturer Part Number | 21371 |
| Item Type Name | Tube Light Bulb |
| Unit Count | 2.0 Count |
| Package Quantity | 1 |
| Item Weight | 1.5 Pounds (680 grams) |
| Item Dimensions W x H | 1.5"W x 48.5"H (3.8 cm) |
| Material Type | copper |
| Shape | Straight |
| Style Name | Industrial |
| Color | Cool White |
| Brand | SYLVANIA |
| Special Feature | Energy Efficient |
Who Should Buy?
-
Office Settings
Ideal for brightening office spaces, enhancing visibility and reducing eye strain during long hours of work.
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Retail Stores
Provides excellent lighting for product displays, attracting customers and improving overall shopping experience.
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Workshops
Great for workshops needing bright, consistent lighting to improve precision and safety during various tasks.
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Residential Use
May not blend well with home decor, lacking the warm lighting often preferred in cozy home environments.
Product Description
Sylvania 21371 - F40CWX 2PK Straight T12 Fluorescent Tube Light Bulb
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What are the dimensions of the Sylvania F40CWX fluorescent tube light bulb?
Answer: The Sylvania 21371 F40CWX fluorescent tube measures 48 inches in length and has a diameter of 1.5 inches, which is typical for T12 bulb sizes. This ensures compatibility with standard fluorescent fixtures, making it a direct replacement for many existing installations. Whether you’re updating your office’s lighting or illuminating a workshop, its specific size allows for easy installation without the need for modifications to your existing fixtures. -
Question:
What is the color temperature of the Sylvania F40CWX bulbs?
Answer: The color temperature of the Sylvania 21371 F40CWX fluorescent bulb is 4100K, which gives off a cool white light. This color temperature is ideal for environments that require bright, clear lighting, such as workspaces, garages, and kitchens. The neutral tone enhances visibility while reducing eye strain, making it suitable for tasks that require focus and precision. -
Question:
Are Sylvania F40CWX bulbs energy-efficient?
Answer: Yes, the Sylvania 21371 F40CWX fluorescent tube light bulbs are designed to be energy-efficient compared to traditional incandescent bulbs. Fluorescent technology uses less energy to produce the same amount of light, which can lead to lower electricity consumption. This makes them an excellent choice for both residential and commercial usage, allowing you to save on energy costs while still enjoying bright lighting. -
Question:
How do I install the Sylvania 21371 F40CWX fluorescent tube?
Answer: To install the Sylvania F40CWX fluorescent tube, ensure the power is off and simply remove the old tube by rotating it to unlock it from the fixture. Then, align the pins of the new Sylvania bulb with the contacts in the fixture, securely inserting one end first and then the other. This straightforward installation makes it suitable for those who want a quick lighting upgrade in spaces like garages or retail locations without needing professional help. -
Question:
Where is the Sylvania F40CWX bulb commonly used?
Answer: The Sylvania 21371 F40CWX bulb is commonly used in a variety of settings including commercial spaces, warehouses, kitchens, and workshops. Its brightness and color temperature make it ideal for areas that need clear and efficient lighting for tasks such as assembly work, food preparation, or detailed craftsmanship. This versatility ensures it meets the needs of both professional and home environments. -
Question:
What type of ballast is required for the Sylvania F40CWX bulbs?
Answer: The Sylvania 21371 F40CWX fluorescent tube requires a magnetic ballast for operation, as it is a T12 bulb. It's essential to ensure that your fixture is compatible with this type of ballast to guarantee optimal performance and avoid flickering or failure. This specification is particularly relevant when upgrading older fixtures, as the compatibility of the ballast can impact the overall effectiveness of your lighting setup. -
Question:
Are there any alternatives to the Sylvania F40CWX bulb?
Answer: Yes, there are several alternatives to the Sylvania 21371 F40CWX bulb, including T8 fluorescent tubes or LED replacements. T8 bulbs provide enhanced energy efficiency and higher lumens per watt, while LED options significantly reduce energy usage and provide longer lifespans. However, when choosing alternatives, ensure compatibility with your existing fixtures and consider any changes required for installation. -
Question:
What is the lifespan of the Sylvania F40CWX fluorescent bulb?
Answer: The lifespan of the Sylvania 21371 F40CWX bulb is approximately 20,000 hours under normal operating conditions. This longevity is beneficial for reducing the frequency of replacements, especially in hard-to-reach fixtures. Users will appreciate the reduced maintenance needs, making it a practical choice for settings like offices or factory environments where consistent lighting is crucial. -
Question:
Can the Sylvania F40CWX bulb be used in residential settings?
Answer: Yes, the Sylvania 21371 F40CWX bulb is suitable for residential settings such as basements, kitchens, or laundry rooms, providing ample lighting where clarity is needed. Its cool white light enhances visibility, making daily tasks easier. Homeowners can benefit from its energy efficiency and reliability, contributing to a well-lit and functional living space, regardless of the area. -
Question:
Where can I buy Sylvania 21371 - F40CWX 2PK Straight T12 Fluorescent Tube Light Bulb in Antigua and Barbuda?
Answer: You can buy the Sylvania 21371 - F40CWX 2PK Straight T12 Fluorescent Tube Light Bulb at Ubuy. Ubuy offers a convenient online platform for purchasing a variety of products, including lighting solutions like the Sylvania F40CWX. Simply visit their website, search for the product, and you'll find more information to assist you with your purchase.
SYLVANIA Fluorescent Tubes 10 80 DHPHT NE/ST Editorial Review
The Sylvania 21371 - F40CWX 2PK Straight T12 Fluorescent Tube Light Bulbs are a cost-effective option for those looking to replace old or broken bulbs. While some customers have had issues with faulty bulbs that flicker and don't turn on, others have had success with easy installations and protected prongs. It's important to note that these bulbs may not be the most reliable option, as some customers have reported that they only worked for a short period of time before going out.
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Pros
- Good value for the money
- Protected prongs against corrosion and bending
Cons
- Some bulbs may be faulty and not work properly
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“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
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- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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XCD 97
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Features & Benefits
- 40 watt - 48 - T12 - Medium Bi-Pin (G13) Base - 4,100K - Deluxe Cool White - Rapid Start
- Color/Finish: Cool White
- Color Temperature: 4,100K
- Average Lifetime: 20000 hours
- Lumens (light output): 2150
- CRI: 87
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