LED Tubes

These LED tube lights replace traditional fluorescent tubes.
They're mostly too big and fragile to post - so bigger sizes are for callers only.
As long as the old fluorescent fitting has a starter, these tubes are usually a direct replacement for the original tubes (they are supplied with a "dummy" starter to replace the old starter).
If the fitting doesn't have a starter, it likely has an electronic ballast and might need to be modified to use an LED tube.