Replacement for Sylvania 21878 - 31W, U-Bend, 2-Pin Base

This 31-watt T8 fluorescent lamp replaces the Sylvania 21878. Featuring a medium bi-pin base, it provides reliable illumination with consistent performance throughout its rated life.

With 2725 lumens, brightness is robust - well-suited for offices, retail, and general commercial use. The 3500K neutral white color temperature produces light that feels clean and adaptable - neither warm nor cool. The 82 CRI provides good color accuracy suitable for most commercial and residential applications.

Key Features & Benefits

• Neutral 3500K Color: Versatile color temperature for varied settings.
• Light Output: 2725 lumens ensures adequate illumination.
• 82 CRI: Good color rendering for natural appearance.
• Medium Bi-Pin Base: Direct fit for compatible fixtures.
• Brand New: Factory-fresh lamp with full rated life ahead.

Product Specifications

• MPN: 21878
• Wattage: 31 Watts
• Color Temperature: 3500K (Neutral White)
• Lumens: 2725
• CRI: 82
• Base: G13
• Shape: T8
• Condition: Brand New

Common Applications

This fluorescent lamp is commonly found in:

• 2x2 Troffer Fixtures
• Office Ceilings
• Commercial Buildings
• Retail Environments

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.