Name: 4ft T8 LED Bulb 13 Watt 1950 Lumens 80+ CRI Medium Bi-Pin G13 Base 120-277V / Ballast Dependent
Brand: Keystone Technologies
SKU: KT-LED13T8-48G-835-X3
Price: 12.75 USD
Availability: InStock

4ft T8 LED Bulb 13 Watt 1950 Lumens 80+ CRI Medium Bi-Pin G13 Base 120-277V / Ballast Dependent

Commonly installed in offices, classrooms, corridors, retail spaces, and commercial interiors where 4-foot fluorescent T8 lamps are being upgraded to energy-efficient LED retrofits with flexible installation options.

Hybrid Dual Installation: Supports both plug-and-play (ballast compatible) and single-ended ballast-bypass configurations for retrofit flexibility.
Energy-Efficient Retrofit: Delivers 1,950 lumens while consuming only 13 watts, reducing operating costs versus fluorescent T8 lamps.
Selectable CCT: Field-selectable 3500K, 4000K, and 5000K options accommodate task, ambient, and general lighting needs.
Consistent Light Quality: 80+ CRI provides clear visibility and accurate color rendering.
Long Service Life: Rated for 50,000 hours to minimize maintenance and relamping cycles.
Universal Retrofit Size: Standard 4-foot form factor fits existing T8 fluorescent fixtures.

$12.75

Free shipping calculated at checkout.

Color Temperature

3500K

4000K

5000K

In stock, ready to ship
Backordered, shipping soon

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Brand	Keystone Technologies
Wattage	13W
Voltage	120–277V or Ballast Dependent
Lumens	1,950
Lamp Type	LED
CCT	3500K, 4000K, 5000K
CRI	80+
Dimming	Non-Dimmable
Base	Medium Bi-Pin G13
Certifications	cULus Listed, ETL Listed, FCC Compliant, RoHS Compliant, DLC Standard Listed
Rated Life	50,000 Hours
Dimensions	1.10" D × 47.15" L
Warranty	5-Year Warranty

Shipping

We offer free shipping on all orders within the United States, with no hidden fees or charges at checkout. International shipping is available, with rates calculated based on weight and quantity at the time of purchase.

Most orders ship within 1–3 business days. Some items are built to order and may require additional lead time. Orders may ship from multiple locations depending on the brands ordered, and tracking information will be provided for each shipment.

For more details, please visit our Shipping Policy or contact our customer service team for assistance.

Returns

We offer a 60-day return policy for eligible items. Products must be unused, in their original packaging, and include proof of purchase.

To start a return, you may use our self-service portal or email customerservice@starsandstripeslighting.com. If approved, we will provide a return shipping label and instructions. Returns sent without prior approval will not be accepted.

If your item arrives damaged, defective, or incorrect, please contact us promptly so we can make it right.

Some items, including custom orders and gift cards, are non-returnable. To exchange a product, please return the original item and place a new order once the return is approved.

Refunds are issued to the original payment method within 10 business days of approval. If more than 15 business days have passed, please contact us for assistance.

For full details, visit our Return Policy.