Satco S6638 40W T12 Daylight Fluorescent Tube Bulb

Product Description

The SATCO S6638 is a 40-watt T12 fluorescent tube bulb designed for general-purpose commercial and residential lighting applications. It features a medium bi-pin base and is rated at 40 watts with a daylight color output suited for environments where accurate color rendering and consistent illumination are priorities. The T12 tube format is a widely used lamp standard found in surface-mount strip fixtures, wraparound fixtures, and industrial shop lights. Licensed electricians and maintenance technicians typically source this lamp as a direct replacement in existing T12 ballast-driven fixtures. High lumen maintenance means light output stays consistent over the rated lamp life.

The S6638 is well suited for offices, garages, warehouses, and light manufacturing settings where reliable overhead fluorescent lighting is standard. It fits into any compatible T12 medium bi-pin fluorescent fixture and is commonly installed in pairs or banks across ceiling-mounted strip housings. The daylight color profile supports task visibility in work environments where neutral to cool white light is preferred over warm tones.

Key Features

• 40-watt T12 fluorescent tube with daylight color output
• Medium bi-pin base for compatibility with standard T12 fluorescent fixtures
• High lumen maintenance for consistent light output over lamp life
• Suited for general-purpose commercial and residential applications
• Lightweight at approximately 0.66 pounds per unit

Compatibility

Designed as a general-purpose replacement T12 fluorescent lamp for use in standard medium bi-pin T12 fluorescent fixtures operating on compatible T12 ballasts.

Installation Notes

T12 fluorescent lamps are installed by licensed electricians or qualified maintenance personnel. Always de-energize the fixture at the breaker before handling any lamp or ballast components. Align the bi-pin base with the lamp socket and rotate to lock before restoring power. Verify the existing ballast is rated for T12 lamp operation before installing.