Master Of Light F40CW 4ft Fluorescent Tube Bulb – 40W, 4100K Cool White, 4-Pack

Overview

Meet the Master Of Light F40CW 4ft fluorescent tubes, a practical choice for everyday spaces that need dependable, consistent brightness. This 4-pack delivers cool white illumination at 4100K, designed to help areas like offices, workshops, retail displays, and kitchens stay clearly lit without glare.

With a solid lumen profile and a reliable color rendering index, these tubes are built to support task-focused environments where visibility matters. The four-tube pack offers convenient replacement and reduces the frequency of reordering, making it a straightforward upgrade for compatible fixtures.

Key specs

• 4-foot length, 1.5-inch diameter T12 fluorescent tube
• 4100 Kelvin cool white light
• 3200 lumens total; 79 lumens per watt
• 56 CRI for authentic color rendering
• 20,000 hours rated life; non-dimmable
• G13 medium bi-pin base; preheat/rapid start circuit
• Pack includes four tubes

Ideal environments and real-life use cases

• Offices and workstations where clear, balanced lighting supports productivity
• Retail display areas that benefit from bright, true-to-color presentation
• Workshops and garages requiring dependable daytime-like illumination
• Kitchens and commercial spaces where tasks demand sharp, unobstructed visibility

Notes: The bulb may have a slight end-to-end rattle as part of the factory design; this is normal and not a sign of defect. We are a USA-based small business, and we encourage you to reach out with any order concerns so we can assist promptly.

Why choose Master Of Light

• Consistent brightness with a practical 4100K cool white tone
• Solid lumen output and color accuracy suitable for everyday spaces
• Long-lasting design paired with a simple replacement setup
• Support and service from a U.S.-based small business

Note: This description emphasizes possibilities and practical benefits based on the data provided. Individual results may vary by fixture and usage. This product is intended as a straightforward replacement option for compatible T12 fixtures with a G13 base.