LED Centerbasket Troffer Retrofit kits are a hot item because they are super easy to install and provide a clean, updated link for existing 2x4, 2x2 and 1x4 fluorescent fixtures. Even better, they now come in Color-Select + Power-Select technology, meaning you can choose between three different wattage levels for each size as well as 3500K/4000K/5000K color temps.