8-foot T8 LED lamp with single-pin FA8 base for high-output linear fixtures; 120–277V input, 43W (5,000 lumens) with 80+ CRI.

T8 8ft LED Bulb 43 Watt 5000 Lumens 80+ CRI Single Pin Fa8 Base 120-277V


Used in high-output linear applications requiring single-pin lamps. This Keystone Technologies 8-foot T8 LED bulb operates at 43W, delivers 5,000 lumens with 80+ CRI, uses an FA8 single-pin base, and supports 120–277V input.


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Technical Specifications & Performance Data

Brand Keystone Technologies
Wattage 43W
Voltage 120–277V
Lumens 5,000
Lamp Type LED
CCT 4000K, 5000K
CRI 80+
Dimming Non-Dimmable
Base Single Pin FA8
Certifications cULus Listed, RoHS Compliant
Dimensions 93.31" L × 1.31" D
Rated Life 50,000 Hours
Warranty 5-Year Warranty

Project Documentation & Technical Downloads

Technical FAQ Deep-Dive

What are the primary benefits of this Bypass (Type B) 8ft T8 LED bulb?

The Keystone 43W 8ft T8 LED is a double-ended line voltage (Type B) lamp designed to bypass the existing ballast. By connecting the lamp directly to the 120–277V line voltage, you eliminate the ballast as a potential point of failure. This configuration is ideal for high-ceiling industrial warehouses and large retail environments where reducing long-term maintenance costs is a priority.

How does the 43W LED output compare to traditional 8-foot fluorescent lamps?

This 43W LED lamp delivers a powerful 5,000 lumens, serving as an energy-efficient replacement for standard 59W–75W F96T8 fluorescent tubes. By switching to LED, facilities can achieve equivalent or superior brightness while reducing energy consumption by approximately 40%. This efficiency is critical for meeting modern Lighting Power Density (LPD) requirements in large-scale commercial perimeters.

What is the significance of the Single Pin Fa8 base and 8ft length?

The Single Pin Fa8 base is the standard connection for 8-foot (96-inch) slimline fixtures. At 93.31 inches in length, this lamp provides a continuous, high-output light source that eliminates the "shadow gaps" often seen when using multiple shorter lamps in a row. This makes it the preferred choice for illuminating long aisles in distribution centers and big-box retail stores.

What color temperature (CCT) options are available for this 8ft LED lamp?

This model is available in 4000K (Cool White) and 5000K (Daylight). The 4000K option provides a clean, neutral light suitable for general commercial spaces, while 5000K offers a high-contrast daylight tone that improves visibility and safety in manufacturing zones and loading docks where detail-oriented tasks are performed.

What is the benefit of the Shatterproof Glass construction?

The lamp is constructed with shatterproof coated glass, combining the rigid, non-bending properties of glass with a protective safety layer. Unlike plastic tubes that may sag over an 8-foot span, the glass housing maintains its straight profile throughout the life of the lamp. The shatterproof coating ensures that if the lamp is damaged, glass shards are contained, making it safe for open-fixture installations.

What is the significance of the Double-Ended wiring configuration?

This 8ft LED utilizes double-ended wiring, meaning power is applied to both ends of the lamp. This design simplifies the retrofit process because it often allows for the use of existing non-shunted lampholders (tombstones). It provides a more secure electrical connection for long-span lamps and is a standard safety feature for modern Type B LED retrofits.

What are the longevity and warranty specifications for this 8ft bulb?

Rated for 50,000 hours of operational life, this T8 LED drastically reduces the frequency of difficult, high-ceiling lamp replacements. Keystone Technologies backs this product with a 5-year warranty, covering the internal driver and LED array. This ensures a reliable, long-term lighting solution for heavy-duty industrial and infrastructure applications.


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