Satco S6660 39W T12 Fluorescent Tube 4200K

4-Foot T12 Fluorescent Tube by Satco

The S6660 from Satco is a 39W, 48 inch T12 linear fluorescent tube designed for replacement in fixtures that use T12 lamps with an Fa8 base. It is suitable for general indoor lighting needs. Key features include 2875 lumens and a 4200K color temperature.

Key Features and Benefits of This T12 Fluorescent Tube

At 2875 lumens, the tube provides ample light for work and utility areas. The 4200K color temperature is a neutral to cool white, which reads as crisp and clear. The 9,000-hour rated life reduces replacement frequency. Its CRI (Color Rendering Index) of 62 is moderate, so color accuracy is limited.

Where to Use the S6660 T12 Fluorescent Tube

This tube is a replacement lamp for existing 48 inch T12 fixtures, commonly found in garages, workshops, basements, and utility spaces. Lumenco's page does not list a location rating, so confirm suitability before using it in damp areas. It is not intended where accurate color matching matters.

Installation and Compatibility Checks

Before purchasing, confirm that your fixture takes a T12 lamp with an Fa8 base and measures 48 inches between sockets. Check that your ballast is compatible with a 39W T12 lamp. Voltage and dimming information are not stated on the page, so review the linked specification sheet.

Additional Buying Context

The tube is RoHS compliant. T12 is an older fluorescent format, so if you are updating a fixture, compare it with LED tube options that offer higher efficiency. Match the color temperature across all tubes in a fixture so the light looks uniform.