Luxrite LR21406 MR16 LED Light Bulb 6.5W 4000K GU5.3 12V

Luxrite LR21406 MR16 LED Light Bulb – 6.5W, 4000K Cool White, 500 Lumens

The Luxrite LR21406 MR16 LED light bulb provides bright, energy-efficient 4000K cool white light while using only 6.5 watts of power. Designed as an LED replacement for a traditional 50-watt MR16 halogen bulb, the LR21406 produces 500 lumens with a focused 40° flood beam angle.

Featuring a GU5.3 / GX5.3 bi-pin base and 12V low-voltage operation, this compact MR16 LED bulb is designed for compatible low-voltage fixtures. It is an excellent choice for recessed lighting, track lighting, accent lighting, retail displays, showcases, hospitality lighting, cabinet lighting, and other applications that use a 12-volt MR16 bi-pin lamp.

4000K Cool White MR16 LED Lighting

The Luxrite LR21406 produces a clean 4000K cool white light that is brighter and more neutral in appearance than warmer 2700K or 3000K lamps. This makes it well suited for spaces where clear, crisp illumination is preferred, including kitchens, work areas, retail displays, offices, commercial spaces, and architectural accent lighting.

With 500 lumens of light output and an 80 CRI, the LR21406 delivers consistent illumination while maintaining the compact size and directional characteristics expected from an MR16 lamp.

50-Watt Halogen Replacement Using Only 6.5 Watts

Upgrade compatible 50-watt MR16 halogen bulbs to LED with the Luxrite LR21406. This lamp uses only 6.5 watts while delivering 500 lumens of useful light output, providing an energy-efficient alternative to traditional halogen MR16 lamps.

The LR21406 has a rated life of up to 25,000 hours, helping reduce the frequency of bulb replacement and ongoing maintenance compared with conventional halogen lighting.

Dimmable MR16 LED Bulb

The Luxrite LR21406 is TRIAC dimmable, allowing compatible lighting installations to adjust brightness according to the application. It can provide full illumination for task or display lighting or be dimmed for softer accent and ambient lighting when used with compatible dimming equipment and a compatible low-voltage transformer.

40° Flood Beam for Controlled Light Distribution

A 40-degree flood beam angle provides a controlled spread of light that works well for directional, accent, display, recessed, and track-lighting applications. The beam is wide enough to illuminate a useful area while remaining more focused than a general-purpose omnidirectional bulb.

12V GU5.3 / GX5.3 Bi-Pin Base

The LR21406 is a 12-volt MR16 LED bulb with a 5.3 mm bi-pin base. Luxrite identifies the product family as MR16 GX5.3 while the technical specification lists the base as GU5.3. Before ordering, compare the two pins, lamp size, and voltage of your existing bulb to make sure it matches your fixture.

Rated for Enclosed Fixtures and Damp Locations

The Luxrite LR21406 is enclosed-fixture rated and damp-location rated, giving it added versatility in compatible lighting installations. The lamp is also ETL listed and backed by a 3-year manufacturer warranty.

Luxrite LR21406 Features

• MR16 LED light bulb
• Luxrite item number: LR21406
• 6.5 watts power consumption
• 50W halogen replacement
• 500 lumens
• 4000K Cool White color temperature
• 80 CRI
• 40° flood beam angle
• 12V low-voltage operation
• GU5.3 / GX5.3 bi-pin base
• TRIAC dimmable
• 25,000-hour rated life
• 77 lumens per watt efficacy
• Enclosed-fixture rated
• Damp-location rated
• ETL listed
• 3-year manufacturer warranty

Luxrite LR21406 Specifications

Common Applications

The Luxrite LR21406 4000K MR16 LED bulb is suitable for a wide range of compatible residential and commercial low-voltage lighting applications, including:

• Recessed and directional lighting
• Track lighting
• Accent lighting
• Display and showcase lighting
• Retail store lighting
• Hospitality lighting
• Kitchen and work-area lighting
• Cabinet and architectural lighting
• Other compatible 12V MR16 fixtures

Frequently Asked Questions

Is the Luxrite LR21406 a 12V MR16 bulb?

Yes. The Luxrite LR21406 operates at 12 volts and is designed for compatible low-voltage MR16 lighting systems. It should not be connected directly to a standard 120V socket.

What base does the Luxrite LR21406 use?

The LR21406 uses a 5.3 mm bi-pin base. Luxrite refers to the product as MR16 GX5.3 in the product name while its technical specifications identify the base as GU5.3. Always compare your existing lamp and fixture before purchasing.

What color is 4000K light?

4000K is commonly described as Cool White. It provides a clean, neutral-white appearance that is less yellow than 2700K or 3000K lighting and is popular in kitchens, offices, retail displays, workspaces, and commercial environments.

Is the Luxrite LR21406 dimmable?

Yes. The LR21406 is TRIAC dimmable when used with compatible dimming equipment and a compatible low-voltage lighting system.

How bright is the Luxrite LR21406?

The LR21406 produces 500 lumens while consuming only 6.5 watts. It is designed as an LED replacement for a traditional 50-watt MR16 halogen lamp.

What is the beam angle of the LR21406?

The bulb has a 40° flood beam angle, making it suitable for accent, recessed, track, display, and other applications where controlled directional illumination is desired.

How long does the Luxrite LR21406 last?

The LR21406 has a manufacturer-rated life of up to 25,000 hours.

Can the Luxrite LR21406 be used in an enclosed fixture?

Yes. The manufacturer rates the LR21406 for use in enclosed fixtures. It is also damp-location rated.

What is the Luxrite LR21406 manufacturer part number and UPC?

The manufacturer item number is LR21406, the ordering code is LED6.5MR16/FL40/40K/D, and the UPC is 712038894444.