The Lithonia Lighting RTLED RELIGHT brings the advantages of LED indoor ambient lighting to renovation projects. The one-to-one fixture replacement installs from below the ceiling and provides an updated look to a space without breaking the ceiling plane. The energy savings can be maximized by the use of full range dimming and intelligent control options. The assembly kit is available in 2-foot by 2-foot and 2-foot by 4-foot configurations for parabolic and lensed troffer upgrades.