Replacement for Sylvania L15W/21-840 - 15W, Cool White, Linear T8, 2-Pin Base

This 15-watt 18-inch (2-foot) T8 linear fluorescent tube replaces the Sylvania L15W/21-840. The T8 profile (1-inch diameter) offers improved efficiency over older T12 tubes while fitting modern electronic ballast systems. Featuring a G13 medium bi-pin base (the standard connection for linear fluorescent tubes), it's designed for drop-in replacement in commercial, industrial, and residential fixtures.

825 lumens delivers adequate brightness for accent lighting, under-cabinet applications, and smaller fixtures. The 4100K cool white color temperature produces light that feels bright and productive - crisp and clean with a slight blue undertone. This makes it well-suited for offices, schools, hospitals, retail stores, and industrial facilities. The 62 CRI provides functional color rendering appropriate for industrial, warehouse, and utility applications.

Key Features & Benefits

• Cool 4100K Color: Bright, productive illumination for work environments.
• 825 Lumens: Strong light output for effective area coverage.
• G13 Medium Bi-Pin Base: Direct fit for compatible fixtures.

Product Specifications

• MPN: L15W/21-840
• Wattage: 15 Watts
• Color Temperature: 4100K (Cool White)
• Lumens: 825
• CRI: 62
• Base: G13
• Shape: T8
• Condition: Brand New

Common Applications

This linear fluorescent tube is commonly found in:

• Under-Cabinet Fixtures
• Display Cases
• Task Lighting
• Workbench Illumination

During the checkout process, you can choose from expedited services such as overnight delivery to standard ground shipping. We aim to ensure your order is delivered promptly and reliably, wherever you are.

All returns must be made within 30 days of purchase with the invoice. (After 30 days, Interlight credit only, Minimum 25% restocking fee, no returns after 60 days, special items order just for you are not returnable.)

At Interlight, your satisfaction is our priority. We offer a 30-day money-back guarantee on eligible products, provided they are returned in resalable condition with the original invoice.