Sure, here's a refined and simplified version of the original title while maintaining the essential product keywords: *Nicor DLE421205KRDWH LED Downlights, White**

The NICOR DLE4 Edge Lit 4-inch Round LED Downlight is a practical, economical, and energy-efficient solution for lighting your home or office. This high-performance downlight features a low profile and an attractive visual aesthetic, making it incredibly easy to install. The edge-lit technology uses a reflective light guide panel that disperses light through a diffused lens, ensuring a consistent and uniform light output.

One of the key features of the DLE4 is its impressive light quality. With a CRI of 96 and an R9 value exceeding 50, this downlight is among the highest rated LED light fixtures in terms of light output quality. This means that the colors in your space will appear more natural and vibrant, creating a more comfortable and inviting atmosphere.

Installation of the DLE4 is remarkably straightforward. Unlike traditional downlights, the DLE4 does not require a recessed housing or a junction box. Instead, it features a simple 4.25-inch diameter cut-out in the ceiling, which can be easily created using the provided template. The ultra-thin fixture depth (less than 1-inch) and the off-board driver (included) allow for a more flexible installation and increased lifespan with superior heat management.

The adjustable spring-loaded retention tabs on the DLE4 ensure a secure fit, eliminating the need for a J-box or recessed housing. This makes the DLE4 an ideal choice for adding light in tight spaces, such as living rooms, hallways, bathrooms, basements, entryways, porches, and utility closets.

In terms of compliance and certifications, the DLE4 is Title 24 Compliant (except the 5000K version), Energy Star rated, Insulation Contact rated (IC-rated), Airtight, and Damp-location rated. It also comes with NICOR's 5-Year Limited Warranty, giving you peace of mind in your purchase.

At NICOR, the company is dedicated to continuously improving its products and processes to deliver the best possible lighting solutions. By balancing value with the highest design performance, NICOR is committed to providing reliable and innovative products that address your lighting needs. When you choose a NICOR product, you can be confident that it has been rigorously tested to the highest standards, ensuring that you are getting a product that will provide real solutions for your space.

The DLE4 Edge Lit 4-inch Round LED Downlight comes ready to install, with no additional components required. It is a versatile and efficient lighting option that can enhance the ambiance of any room, making it an excellent choice for both residential and commercial applications.

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