Lampi lights at HD and others are wired to a plug but the wire can be
cut and hard wired. Compare cool white 4100k to warm white 3800K there
are displays at certain stores , put your hand under the light directly
you will notice the color difference, grey vs natural. Warm white is for
kitchens and living areas , not cool white 4100K , cool white is for
garages and work areas, cool white bulbs are the cheap ones.