Source smarter with
Leverage AI to find the perfect product match in seconds
Matches from over 100 million products with precision
Handles queries 3 times as complex in half the time
Verifies and cross-validates product information
Get the app
Get the Alibaba.com app
Find products, communicate with suppliers, and manage and pay for your orders with the Alibaba.com app anytime, anywhere.
Learn more

T5 fluorescent light 21w

(123 products available)

About t5 fluorescent light 21w

Types of t5 fluorescent light 21w

The T5 fluorescent lights are slim and energy-efficient tubes widely used in various lighting applications. They come in different lengths and diameters. These tubes produce different amounts of light. They are classified as follows:

  • By Length

    Typically, T5 fluorescent lights come in three standard lengths: 21 inches, 28 inches, and 39 inches. The 21-inch length is commonly used in smaller fixtures, such as desk lamps or under-cabinet lighting. The 28-inch length is often used in larger fixtures, such as shop lights or aquarium lights. The 39-inch length is typically used in commercial and industrial applications, such as warehouses and parking garages.

  • By Lumens

    Lumens measure the amount of visible light emitted by a source. A higher lumen count indicates a brighter light. T5 fluorescent tubes vary in lumens depending on their length and type. For example, a standard 21-inch T5 fluorescent tube can produce around 1,500 lumens. In comparison, a high-output T5 tube of the same length can produce about 2,000 lumens.

  • By Wattage

    T5 fluorescent tubes are also categorized by wattage. Generally, the wattage ranges from 14W to 28W. The lower wattage tubes are suitable for applications that require less brightness. For example, reading lamps and accent lighting. In contrast, higher wattage tubes are suitable for applications that require more brightness. For instance, task lighting, horticultural lighting, and commercial display cases.

  • By Color Temperature

    Fluorescent lights are also classified according to color temperature, which is measured in Kelvin. This indicates how warm or cool the light is. A lower number means a warmer light, while a higher number means a cooler light. The lights have different color temperatures ranging from 2,700K to 6,500K. The 2,700K is a warm light suitable for residential spaces such as living rooms and bedrooms. On the other hand, 6,500K is a cool light that is good for task-oriented areas like workshops and kitchens.

Functions and Features of t5 fluorescent light 21w

T5 fluorescent lights have different features from other types of fluorescent lights. They are smaller in diameter, and their uses vary depending on their length.

  • Size and Diameter:

    The T5 fluorescent tube lights are 5/8 inch in diameter. This size makes them more efficient than the T8 and T12 lights. The T8 lights have a 1-inch diameter, while the T12 is 1.5 inches. The smaller diameter of the T5 lights makes them more efficient and produces more lumens.

  • Length:

    The T5 lights come in different lengths depending on the use. The standard lengths are 21 inches, 28 inches, 24 inches, and 54 inches. The 21-inch T5 lights are commonly used for indoor lighting in cabinets and other small spaces. The 54-inch T5 lights are used in larger spaces like gyms, workshops, and garages. Their different lengths provide versatility and make them suitable for different uses.

  • Wattage:

    The T5 lights have different wattages, which determine their brightness. The most common wattage is 21W, which is used for smaller indoor areas. Other common wattages are 14W, 28W, 49W, and 54W. The higher the wattage, the brighter the light. Lower wattage lights are used in areas that need less illumination, while higher wattage lights are used in areas that require more light.

  • Compatibility:

    T5 lights are compatible with T5HO (High Output) ballasts. The T5HO lights use the same fixtures as standard T5 lights. They are also compatible with electronic ballasts.

  • Color Temperature:

    The color temperature of T5 lights ranges from 2700K to 6500K. A lower color temperature means a warmer light, while a higher temperature indicates a cooler light. A color temperature of 2700K to 3000K is used in residential areas. 4000K is used in offices, while 5000K to 6500K is used in areas that require brighter light.

Scenarios of t5 fluorescent light 21w

21W T5 fluorescent tubes have various applications. These are as follows:

  • Office lighting

    21W T5 fluorescent tubes are commonly used in offices. They are installed in ceilings. The lights make the offices look well lit. This creates a bright and conducive working environment. The lights also help workers to focus. They help reduce eye strain. This is because the lights offer balanced brightness. Using these tubes in offices is a good idea. This is because they use less energy. They also have a long lifespan.

  • Retail space lighting

    The T5 tubes are installed in shops, boutiques, and department stores. They offer adequate lighting. This makes the products display attractive. The lights make the customers feel welcomed. They improve the overall ambience of the retail space. This is because the lights create subtle and dynamic lighting effects. The energy efficiency of these lights makes them a good choice for retailers. This is because it helps reduce operational costs.

  • Industrial lighting

    These tubes are used in factories and workshops. They are well suited for areas like production lines and workstations. This is because they offer bright and uniform lighting. The lights improve visibility. This allows for safe and efficient operations. The T5 fluorescent tubes are also reliable. They function consistently. This is even in environments with high temperatures and dust. This makes them ideal for industrial settings.

  • Healthcare facilities lighting

    These tubes are installed in hospitals, clinics, and medical centers. They offer bright and even lighting. Their lights are gentle. This creates a soothing atmosphere. This is in areas like waiting rooms. The lights also come with different color temperatures. This helps to maintain a more natural and comfortable environment for patients.

  • Residential lighting

    These tubes are installed in residential spaces. For instance; kitchens, bathrooms, and garages. The lights illuminate these areas. They are functional. They promote safety and efficiency. The T5 fluorescent tubes are versatile. They can be fitted in different fixtures. This allows for integration into different home decor styles.

How to choose t5 fluorescent light 21w

  • Determine the Lighting Needs

    Assess the area where the light will be installed. Is it a workspace, living area, or commercial space? Each area has unique needs. Workspaces like garages or offices need bright lights for tasks. Living spaces require ambient light. Commercial spaces need adaptable lighting solutions.

  • Consider the Fixture Compatibility

    Ensure that the t5 fluorescent tube is compatible with the existing fixtures. Check the ballast type. Electronic ballasts are more energy-efficient than magnetic ones. Also, consider the tube length. A 21w t5 fluorescent light has a specific length that fits particular fixtures.

  • Evaluate the Color Temperature

    Color temperature affects the ambiance and visibility. Measured in Kelvin, Fluorescent light tubes come in different ranges. Cool white colors range from 4000K to 5000K. These are suitable for task areas that need bright, crisp light. Warm white colors range from 2700K to 3000K. These are ideal for living spaces requiring soft, inviting light. Neutral colors fall between the two and are versatile for various settings.

  • Check the Color Rendering Index

    The CRI measures how accurately the light shows colors. A CRI of 80 or more is good for most areas. But for spaces like art studios or retail stores, higher CRI lights are needed.

  • Look at the Energy Efficiency

    Fluorescent lights are known for low energy use. But they differ in efficiency. Check the wattage. A lower wattage means lesser energy use without compromising brightness. Also, consider the luminaire efficacy. This is the amount of light produced per watt. A higher figure means better efficiency.

  • Assess the Lifespan and Durability

    Fluorescent tubes have different lifespans. Look for those with a longer lifespan to cut replacement costs. Also, consider the tube's durability. If the light will be installed in high-traffic areas, choose shatter-resistant tubes.

  • Think About the Environmental Impact

    While all fluorescent tubes contain mercury, some have less mercury than others. Choose tubes with low mercury content for less environmental harm. Also, consider their energy use. More energy-efficient lights mean a smaller carbon footprint.

T5 Fluorescent Light 21W Q & A

Q1. Is a T5 fluorescent light suitable for home use?

A1. Yes, T5 fluorescent lights can be used at home. They are ideal for use in residential areas. They can be used in garages, basements, and smaller rooms. However, they are mostly used for commercial purposes or in professional settings.

Q2. What does the 21W in a T5 fluorescent light mean?

A2. The 21W indicates the power consumption of the light. It shows that this T5 fluorescent light tube uses 21 watts of power. This information is important as it helps determine the amount of brightness a tube can produce.

Q3. What are the dimensions of a T5 21W fluorescent light?

A3. A T5 21W fluorescent light has a dimension of 24 inches in length. It has a diameter of 5/8 inches. The size of the tube is standard and will fit in most fixtures designed for T5 fluorescent tubes.

Q4. What color temperature can buyers expect from a T5 21W fluorescent light?

A4. A T5 21W fluorescent light's color temperature will differ based on the specific model. Generally, they range from 3000K to 6500K. Lights with a color temperature of 3000K are warm, while those with 6500K are cool.

Q5. Can a T5 21W fluorescent light be dimmed?

A5. It is possible to dim a T5 21W fluorescent light if it is compatible with a dimmer switch. The light cannot be used with a non-dimmable switch, as it will not work. Dimming a fluorescent light can help to adjust the brightness.