4FT LED Retrofit Kit 36W 5400LM 3500K Warm White - Easy Retrofit

In this review of the 4FT LED Retrofit Kit the bottom line is simple: this kit is for facility managers and DIY installers who want a fast, reliable upgrade from fluorescent tubes to high-efficiency LED lighting. The biggest reason to buy is the combination of strong magnetic mounting and ballast-replacement design that lets users retrofit existing 1x4 and 2x4 troffers in minutes without extensive rewiring while delivering a bright, warm 3500K output.

Key Features

• Magnetic Mounting: Strong perimeter magnets allow quick attachment inside existing troffers so installation typically takes only minutes.
• High Lumen Output: The kit delivers 5400LM which matches or exceeds traditional fluorescent brightness for well-lit workspaces.
• Energy Efficiency: At 36W per kit it reduces energy use dramatically compared with fluorescent fixtures and helps cut electric bills.
• Durable Construction: Polycarbonate front and aluminum back offer impact resistance and improved heat dissipation for long service life.
• Long Lifespan: Rated for an average of 100,000 hours, the kit is designed to last decades under normal use.
• Warranty Support: A 5-year warranty provides protection and an easy replacement path if issues occur.

Who It's For

This retrofit kit is ideal for commercial and institutional spaces such as offices, schools, libraries, showrooms and healthcare facilities that already have recessed 2ft or 4ft troffers and want a straightforward LED upgrade. It suits maintenance staff and contractors who value fast installs and minimal disruption, since the kit keeps the existing recessed cans in place.

Those who need a decorative fixture change, color-tunable lighting, or integrated smart controls should look elsewhere; this kit focuses on practical replacement of fluorescent tubes with a warm, fixed 3500K output and simple magnetic mounting rather than advanced controls.

Pros & Cons

Pros

• Easy magnetic installation into existing troffers reduces labor time and complexity.
• Bright 5400LM output provides strong, even illumination for work areas and corridors.
• Durable polycarbonate cover and aluminum back improve longevity and heat management.
• Significant energy savings with long rated life lowers operating costs.

Cons

• Fixed 3500K color temperature limits flexibility for users who want cooler or tunable white options.
• Designed as a retrofit rather than a decorative fixture, so it does not change ceiling aesthetics significantly.

Specifications

Our Verdict

The 4FT LED Retrofit Kit is a practical choice for anyone replacing fluorescent tubes in existing 1x4 or 2x4 troffers where speed, longevity and energy savings matter. It delivers strong 5400LM brightness, durable construction and an easy magnetic install that makes it good value for facilities seeking a low-disruption LED upgrade.

Frequently Asked Questions

Can this kit fit my existing 2ft or 4ft recessed troffer?
Yes, the kit is designed to replace ballast and tubes in 1x4 and 2x4 troffers and fits inside existing recessed fixtures.

Does installation require rewiring the ceiling?
No, the magnetic retrofit design allows installation inside the existing fixture without rewiring the entire ceiling; follow the included instructions for safe installation.

Is the light dimmable or color tunable?
The product is a fixed 3500K warm white output and does not include tunable color or integrated dimming features.