🔌 Robertson 2P20132 Quik-Pak: 10 Fluorescent eBallasts for 2 F40T12 Linear Lamps, Preheat Rapid Start, 120Vac, 50-60Hz, Normal Ballast Factor, NPF, Model RSW234T12120 /A (Crosses to RSW240T12120 /B) Review

I like it! Lamps behave like new. Eight lamps are required to replace one lamp, as the old lamps are no longer available. These ballasts update the lamps. Works perfectly

Wow! Wonderful! Very powerful and bright lighting for the 1/3 ballast I had before. Like other reviewers I was concerned if it would work as it is 1/3 the size of the ballast I have now but it works great! 1/3 size and 1/3 home storage price!

All 10 installed, all worked great. Before that I bought a ballast from Phillips and I don't like it. Just because the Phillips ballast turns on with a delay. Robertson ballasts turn on instantly. I've also found that bulbs that don't work on old magnetic ballasts often work on these electronic ballasts. I put them in Loa lights, cheap Walmart lights.

I was quite skeptical because of the price. When they arrived I was even more skeptical because they were a lot smaller than the ones we were using. I've paid $27-$30 for them at local stores. I usually replace them at the office when they leave. We have a few rooms in our office that we don't use, so I let a few lapse when they left before replacing them. I found them online and for the money felt worth a try. I was able to get 10 for the same price as 3. I had to drill new holes as their size