ASD 40 in LED Under Cabinet Lighting - Dimmable 5CCT, 1814 lm

In this review of the ASD 40 in LED under cabinet lighting, the bottom line is simple: this fixture is best for homeowners and renovators who want a clean, integrated undercounter light with flexible color temperature and reliable dimming. The light's strongest selling point is its combination of a slim, hardwired design with a built-in slide switch offering five color temperatures and a smooth triac dimming range, which together deliver consistent, tunable illumination for kitchen tasks and accent lighting.

Key Features

• Sleek design: The low-profile 40 in housing and acrylic lens provide an even, discreet backlight with a wide 110 beam angle for undercabinet use.
• Five color temperatures: The accessible slide switch lets users choose from 2700K to 5000K so the same fixture adapts to warm ambient or bright task lighting.
• High output: Rated up to 1814 lumens, the fixture supplies ample brightness for countertop tasks while maintaining color fidelity with CRI90+.
• Smooth dimming: Triac dimming from about 10% to 100% enables precise control with compatible modern LED dimmers for mood or task scenes.
• Hardwired installation: Includes connector, wire nuts, screws and instructions for a direct 120V hookup and is rated for damp locations.
• Durability and warranty: Long 50,000 hour lifespan and a 5-year limited warranty plus UL certification offer long-term peace of mind.

Who It's For

This light is aimed at homeowners updating kitchen lighting, cabinet installers, and DIYers comfortable with a hardwired 120V install who want a slim, consistent undercabinet solution with both color temperature choice and dimming. It works well where a clean recessed look or hidden backlight is desired and where CRI90+ color rendering matters for food prep and display.

Those who should look elsewhere include buyers requiring plug-in fixtures or battery-powered solutions, or anyone who cannot or will not accommodate a hardwired installation. Also, if you need networked smart control out of the box, this basic hardwired unit without wireless integration is not ideal.

Pros & Cons

Pros

• Multiple color temperatures via slide switch let you dial in warm or daylight tones without changing fixtures.
• Strong brightness and high CRI90+ deliver true colors and practical task lighting along counters.
• Smooth triac dimming works well with modern LED dimmers for wide-range light control.
• Simple hardwired installation with included connectors and a long lifespan backed by a 5-year warranty.

Cons

• Hardwired installation can be a drawback for users expecting a plug-in setup or who find wiring and instructions less clear.
• Control is local only; there is no remote or smart home integration included.

Specifications

Length	40 in
Power	20W
Lumen output	1814 lm
Color temperature options	5CCT: 2700K, 3000K, 3500K, 4000K, 5000K
Color rendering	CRI90+
Dimming	Triac dimming 10% to 100%
Installation	Hardwired 120V, includes connector, wire nuts and screws

Our Verdict

The ASD 40 in under cabinet light is a practical, well-made choice for kitchens and work surfaces that need tunable, high-CRI illumination with seamless dimming. It represents good value for anyone able to hardwire the fixture and who wants clean, dependable undercounter lighting without smart features.

Frequently Asked Questions

Is this fixture dimmable?
Yes, it supports triac dimming from approximately 10% to 100% with compatible LED dimmers.

How many color temperatures are available?
The fixture offers five selectable CCTs: 2700K, 3000K, 3500K, 4000K and 5000K via a slide switch.

Does it require hardwiring?
Yes, the unit is hardwired to 120V and comes with connectors, wire nuts, screws and instructions for installation.