The decision point is what stays and what goes. A magnetic retrofit kit keeps the existing troffer door frame and replaces the internals. A trim retrofit replaces the trim and lamp assembly in a recessed can. A lens retrofit keeps the housing but swaps the lens and light engine. Getting the kit right depends on measuring the existing housing, not on the fixture family name — which is why the product pages list housing series and dimensions.
This group covers troffer retrofit kits, downlight retrofit kits and trims, linear strip retrofits and high bay retrofit assemblies. Kits that keep the existing ballast are marked direct-drive compatible or ballast-bypass; check which one your fixture is wired for before ordering.
