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Keystone Technologies
4 Foot 18 Watt 1900 Lumen Single Ended Bypass T8 LED Tube Light 4000K

Keystone Direct Drive LED T8 Replacement Tubes
Our price (Before qty discounts*): $20.12

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1 to 3$20.12
4 to 6$19.45
7 or more$18.96
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In stock
Item Number: KTL-LED18T8-4-840-DD
Manufacturer: Keystone Technologies
Manufacturer Part No: KT-LED18T8-48P-840-D/G2 - Key
Operating Voltage: 120-277 Universal Voltage
UPC: 890949008348
Technology: LED
Watts: 18
Lumens: 1,900
Color Temp: 4000K
CRI (Color Rendering Index): 80
Length of Tube: 4 Foot
Common Name of Color: Cool White
Dimmable: No
Beam Angle Range: 120-129
Product Specifications - Quick Reference
Input Voltage:
120-277 Volt AC
NOT Dimmable
Quantity of LEDs:
1.25" Diameter x 47.15" Long
LED Color:
4000 Kelvin
Rated Life Span:
Up To 50,000 Hours (L70)
1,900 Lumens
106 lm/w
CRI / Beam Angle:
>80 CRI / 120 Degrees

Fluorescent F32T8 Replacement Chart**:

Sylvania FO32/841/ECO
Philips F32T8/TL841/ALTO
Eiko F32T8/841/HO
Howard F32T8/841/ECO
Satco Hygrade F32T8/841/ENV
Maxlite F32T8/841XL
TCP F32T8/841 - 31032841HL
Halco F32T8/841/ECO
Ushio F32T8/841/ECO
Generic F32T8/841

Keystone - Since 1945Keystone LED T8 tube lights can be utilized in fixtures that currently have fluorescent lighting: Commercial/Office Space Retail Installations  Hospitals Airports and Train Stations Residential Installations Food Service Locations Schools and Cold Storage. The lumen output of an LED T8 tube is different than that of the more familiar fluorescent T8 lamp. Fluorescent lamps deliver lumens in a 360° pattern, where many of the lumens are wasted because they are directed upwards. With LED T8 tube lights, the delivered light is more directional, so fewer lumens are required to achieve similar or greater levels of usable light output. 

This series of Keystone LED tube lights has a frosted, plastic lens and an aluminum backing. There is no risk of broken glass making them ideal for food service, residential and school applications. The aluminum backing provides excellent heat dissipation while offering structural rigidity to prevent bowing. Keystones Direct Drive LED tubes eliminate the need for an external driver or ballast. For new construction installations, simply connect the 120-277V line voltage directly to the sockets. For retrofit installations, bypass the existing ballast by cutting the wires and instead connect the 120-277V line voltage directly to the sockets. No ballast or driver is required. Making your retrofit project even easier, Keystone offers a four (4) socket, non-shunted wiring harness - complete with the quick disconnect connectors. Click here to see the complete Keystone Direct Drive LED Tube Light Brochure. 

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Here is the Keystone Technologies, 120 degree beam angle, frosted lens, T8 Medium Bi-Pin retrofit LED tube lights. Part number KT-LED18T8-48P-840-D/G2 (the next generation replacement for the KT- LED18T8-4-840-DD), 4000K cool white, has a Power Factor >0.9 and consumes just 18 watts of 120 to 277 volt 60 Hz energy. Listed on the DLC Qualified Product List (DLC Product Code PP2JUGEV) and suitable for use in dry or damp locations, these LED T8 replacement tubes, which utilize 144 LEDs, are non-dimmable, will produce 1,900 Lumens of light output (that's an awesome 106 Lumens Per Watt), has a CRI >80 and a rated life of up to 50,000 hours based on L70. The Keystone KT-LED18T8-48P-840-D/G2 is an LED retrofit option to replace your current T8 fluorescent tubes like the Sylvania FO32/841/ECO, GE F32T8/SPX41/ECO, Philips F32T8/TL841/ALTO, Eiko F32T8/841K, Satco Hygrade F32T8/841/ENV, Halco F32T8/841/ECO, Howard F32T8/841/ECO, Maxlite F32T8/841XL, TCP F32T8/841 - 31032841HL, Ushio F32T8/841/ECO or the generic call out of F32T8/841(**). Give them a try - You will be very pleasantly surprised. Click here to see the KT-LED18T8-48P-840-D/G2 Specification Sheet.

These LED fluorescent replacement bulbs have a 120 degree beam angle and an industry standard G13 medium bi-pin base which easily integrates energy saving LED technology into your standard recessed fluorescent troffers or industrial fluorescent lighting format. (SPECIAL NOTE: These Fluorescent to LED Retrofit tubes require NON-SHUNTED medium bi-pin G13 sockets. It is always prudent to replace the 'tombstone' sockets any time you retrofit a light fixture. For the Keystone Technologies LED T8 tubes be sure to replace your tombstone sockets with NON-SHUNTED sockets). The physical dimensions of the Keystone LED 4000K LED retrofit are 47.15 long by 1.25 wide. Each KT-LED18T8-48P-840-D/G2 LED T8 retrofit bulb has an internal driver and is wired live on one end only. These LED retrofit bulbs carry a 5 Year Limited Warranty. 

The KT-LED18T8-48P-840-D/G2, 18 watt LED T8 tube has been designed to retrofit existing linear fluorescent T8 or T12 installations, thereby reducing maintenance and energy expenditures in residential, commercial, retail displays, hotel, motel and resort applications and as an energy saving light source for new fixtures and installations. Please NOTE: When retrofitting LED to a fluorescent fixture, the ballast must be by-passed or removed from the fixture.

Keystone KT-LED18T8-48P Wiring Diagrams

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