This 4 Ft * 2 Ft Ceiling Partition fluorescent lamp Set were taken down from my shop ceiling. I am confirm the fluorescent lamp condition, but it is worth to have it. You need to test it yourself. The is no warranty on these items. You need to self pickup of these items, or you can arrange Lalamove to pick them up if you plan to buy a lot. It is a clearance items and while stock last only.