I've ordered 2 4-ft. LED shop lights from DK Hardware. The first one failed after about 6 months, so I ordered a replacement. Now, that one has failed. No responds on their online chat service and can't get anyone at customer service to answer my calls.
Be very careful about using DHK Hardware. In spite of their very "flowery" hold message, their customer service is virtually nonexistent.
Now, I have to go shopping for new shop lights! Thanks, DK Hardware!