Philips - TUV PL-L 18W Air/Water Treatment Germicidal UV Light Bulb

I bought a ballast for for this bulb not the bulb. Don't know why the email link brings me here. The ballast worked perfectly for my Honeywell hvac air sanitizer. I had to trim a little non essential plastic post out of the way but it worked out well. Hat tip to Scottish John for helping me get the correct ballast.

Works with Cleanslate UV

This 18W bulb fits perfectly and I believe is the correct wattage for the Cleanslate UV machine CSUV-UG6CX. I calculated what the wattage of the bulbs are by dividing the number of bulbs (6) by the wattage of the machine (130 Watts) and came up with 18 watts a piece. Cleanslate has worked hard to not provide any information on the bulbs or in the documentation so that they can sell theirs to you including having bulbs that are unmarked for wattage. The CureUV is nearly half the cost of the Cleanslate provided replacement bulbs. My machine is out of warranty so I didn't care about anything but the cost and effectiveness. It is difficult to tell which bulb is burned out and if you hear a clicking noise it is because the ballasts keep trying to restart a burned out bulb which will burn up all of the other bulbs. Easier to just replace all six bulbs simultaneously. BTW, they do contain mercury so dispose of properly.