Technical Precision Replacement Bulb for Trojan Max C/D/D4 Systems 602805 IHS12-d4 40 watt UV Lamp 602805 Replacement - B29-I 4 Pin Large Round with Barriers - Clear Finish - 2 Pack

Easy installation, kind of amazing.

Fits right, not disappointed at all. They last a couple year's.

I have been buying this product for five years and they have never failed except for one which was immediately refunded. A great UV for the money.

It works as expected for half of what Pelican cost

I was really hoping I would find a less expensive option. However, this did not fit my VIQUA UV sterilizer. I am going to have to return it and order the more expensive one. I even double checked to make sure I ordered the correct replacement which I did. There is just a small piece of plastic preventing it from fitting properly.

Nice product. In my case Viqua said I needed a new power supply to fix model V1416 power supply that stopped working. Could not get any bulbs to work after that. So returned power supply and bulbs. Viqua does not know you need to buy whole new system instead of part of new system. Thanks. Probably return later too.God Bless,Don

Great value. I'll never buy OEM again.

Like a lot of people sometimes you have to go for cheap. I have a Viqua ultraviolet light system for my Dug well water. So if you want an original ultraviolet bulb it can be anywhere from 100 to $140 each! When you see something two for $69 you just have to bite! LOL.The problem is within a few days of changing the bulb, 1 filament went bad, I contacted Amazon and they sent me an RMA. I took it to Kohl's and sent the bulb back to them. This was approximately October 10th. I haven't heard a word from Amazon, in fact I just wrote a note to myself tonight to call them tomorrow to see what's going on. So if I don't get a bulb replaced under warranty it's $69 per bulb,still better than$120. The other one is actually still working. The reason I know this is because when we get up in the morning and before we go to bed at night, before we run any faucets, we feel the housing that the bulb goes in and as long as it's warm / hottish we know the bulb is working. I used to take everything apart to pull the bulb out to look at the filaments, but now I realize that I don't have to do that, I can just feel the housing. Still, $69 for one bulb, is a lot better than $119 for one bulb. It sure would be nice to get what you pay for though. So like I said, tomorrow (10 / 26 / 20) I'm going to call Amazon and see if I can resolve the warranty issue on the bad bulb. If they take care of it, it's only $35 a bulb, again opposed to $119. I'll update this when I find out what happens.