15.9W LED Tubes

Star T10 Series | LED Tubes

National LED’s T10 LED Lamps have become widely accepted as the fluorescent retrofit standard for their high lumen output, 80+ CRI and a 200,000-hour life time. The return on investment for these tubes in compared to none other when looking at the lifetime and efficiency!

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10 Year Minimum Warranty

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Features
Certifications
Specifications
Energy Data
Ordering Information
Accessories
  • Integrated driver eliminates the need for an external driver
  • Compatible with Star T8 LED tubes
  • Fully-sleeved glass tube material
  • UL 1598 Type B compliant LED lamp (integrated driver)
  • Single and double ended power options available
  • Ten-year warranty
  • UL Approved (# E352453)
  • DesignLights Consortium Qualified
Spec Type Data
Dimensions 47.75″ x 1.25″
Units/Carton 25
Net Weight 0.75 lbs.
Environmental Rating Damp
Spec Type 3500K 4000K 5000K
Input Voltage (VAC) 120-277 120-277 120-277
System Level Power (W) 15.9 15.9 15.9
Delivered Lumens (Lm) 2,730 2,720 2,750
Efficacy (Lm/W) 172 171 173
Color Temperature (K) 3500 4000 5000
Color Rendering Index (CRI) 80 min 80 min 80 min
L70 Calculated Life (Hrs.)1 200,000 200,000 200,000
Operating Temperature (°C) -20 to 45 -20 to 45 -20 to 45
Series Variant Voltage Length Wattage CCT Diffuser Power Location
ST1 4 UNV – 120-277V 4 – 4′ 15A – 15.9W 35 – 3500K
40 – 4000K
50 – 5000K
GL – Glass Blank – Single Ended
DE – Double Ended

Example: ST1-4-UNV-4-15A-35-GL

Part Number Description
LS-1-4 LoneStar, 1 Tube Strip Fixture Housing
LS-2-4 LoneStar Tandem, 8′ Single Strip Housing
TWS1 TwinStar, 2 Tube Strip Fixture Housing
TWS1-T TwinStar Tandem, 8′ Double Strip Housing
TWS1-1 TwinStar, 2 Tube Strip Fixture Housing with Accommodations for an Occupancy Sensor
TR-3-4 TriStar, 3 Tube Strip Fixture Housing
USQS-44 QuadStar, 4 Tube Wide Body Strip Housing
HBT1 SixShooter, 6 Tube High Bay Fixture Housing
HBT1-1 SixShooter, 6 Tube High Bay Fixture Housing with Accommodations for an Occupancy Sensor
UCLL-24 2×4 Housing with Ribbed Lens – Ceiling Mounted
UCLLS-24 2×4 Housing with Ribbed Lens – Surface Mounted
LS-WG-48 Wireguard Protection for LoneStar Strip Fixture Housing
BCK-8-2-US 1×8 Two Lamp Retrofit
BCK-8-4-US 1×8 Four Lamp Retrofit
RKSR-232TAN-WINST 8′ to 4′ Conversion Kit
USVT-24 4′ VaporTight Housing
USVT-44 8′ VaporTight Housing

Features

  • Integrated driver eliminates the need for an external driver
  • Compatible with Star T8 LED tubes
  • Fully-sleeved glass tube material
  • UL 1598 Type B compliant LED lamp (integrated driver)
  • Single and double ended power options available
  • Ten-year warranty

Certifications

  • UL Approved (# E352453)
  • DesignLights Consortium Qualified

Specifications

Spec Type Data
Dimensions 47.75″ x 1.25″
Units/Carton 25
Net Weight 0.75 lbs.
Environmental Rating Damp

Energy Data

Spec Type 3500K 4000K 5000K
Input Voltage (VAC) 120-277 120-277 120-277
System Level Power (W) 15.9 15.9 15.9
Delivered Lumens (Lm) 2,730 2,720 2,750
Efficacy (Lm/W) 172 171 173
Color Temperature (K) 3500 4000 5000
Color Rendering Index (CRI) 80 min 80 min 80 min
L70 Calculated Life (Hrs.)1 200,000 200,000 200,000
Operating Temperature (°C) -20 to 45 -20 to 45 -20 to 45

Ordering Information

Series Variant Voltage Length Wattage CCT Diffuser Power Location
ST1 4 UNV – 120-277V 4 – 4′ 15A – 15.9W 35 – 3500K
40 – 4000K
50 – 5000K
GL – Glass Blank – Single Ended
DE – Double Ended

Example: ST1-4-UNV-4-15A-35-GL

Accessories

Part Number Description
LS-1-4 LoneStar, 1 Tube Strip Fixture Housing
LS-2-4 LoneStar Tandem, 8′ Single Strip Housing
TWS1 TwinStar, 2 Tube Strip Fixture Housing
TWS1-T TwinStar Tandem, 8′ Double Strip Housing
TWS1-1 TwinStar, 2 Tube Strip Fixture Housing with Accommodations for an Occupancy Sensor
TR-3-4 TriStar, 3 Tube Strip Fixture Housing
USQS-44 QuadStar, 4 Tube Wide Body Strip Housing
HBT1 SixShooter, 6 Tube High Bay Fixture Housing
HBT1-1 SixShooter, 6 Tube High Bay Fixture Housing with Accommodations for an Occupancy Sensor
UCLL-24 2×4 Housing with Ribbed Lens – Ceiling Mounted
UCLLS-24 2×4 Housing with Ribbed Lens – Surface Mounted
LS-WG-48 Wireguard Protection for LoneStar Strip Fixture Housing
BCK-8-2-US 1×8 Two Lamp Retrofit
BCK-8-4-US 1×8 Four Lamp Retrofit
RKSR-232TAN-WINST 8′ to 4′ Conversion Kit
USVT-24 4′ VaporTight Housing
USVT-44 8′ VaporTight Housing

Frequently Asked Questions

What types of LED tubes are available and how do I know which one I need?

LED tubes come in several versions:

  • Type A: works with existing fluorescent ballasts
  • Type B: ballast-bypass, wired directly to line voltage
  • Type C: uses an external LED driver for higher performance and efficiency
  • Hybrid: works as Type A now and can convert to Type B later

Your choice depends on the age of your ballasts, your long-term goals, and whether you want the simplest install or the highest efficiency.

Do LED tubes work in my existing fluorescent fixtures?

Yes. LED tubes are designed to retrofit into most T8 and T12 fluorescent housings. Type A tubes plug in directly with the existing ballast, while Type B and Type C tubes require minor rewiring. This makes upgrades quick and cost-effective without replacing the fixture body.

How much energy can I save by switching to LED tubes?

Most customers save 40 to 60 percent in energy compared to fluorescent tubes. You also eliminate ballast replacement costs, buzzing, flickering, and dim output. LED tubes maintain higher brightness for longer periods with far less maintenance.

Are LED tubes brighter than fluorescent tubes?

Yes. Modern LED tubes produce higher lumens per watt, meaning you get more usable light with less power. They also provide a more consistent, flicker-free output, which improves visibility in offices, warehouses, and schools.

What color temperatures are available, and which one should I choose?

Common options include:

  • 3500K: warm white for retail or hospitality spaces
  • 4000K: neutral white for offices and classrooms
  • 5000K: bright, daylight white for warehouses and work area

Choose based on the atmosphere you want and the tasks performed in the space.

How long do LED tubes last and what maintenance is required?

LED tubes typically last 50,000 hours or more, far longer than fluorescent tubes. They require very little maintenance. If you choose Type B or Type C, you also remove the ballast, which eliminates one of the biggest failure points in the fixture.

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