Robertson ISU232T8120 (3P20116) Electronic Fluorescent Ballast, for 1 or 2 T8 Fluorescent Lamps Between 17W-32W (F17T8 Through F32T8) or 1 F40T8 Lamp, Instant Start, 120V (Qty 1)

I bought two of these and they replaced my accupro 2321P-120-1 T8 ballasts. easy install and working like a charm!!

Awesome! Very easy to install and the diagram on the unit helped me out. The ballast is a little smaller than the previous one but it all works and I am happy with Robertson products.

I wasn’t sure I needed these until I installed them. I had I bulb not lighting in two of lights. Pretty easy install, simple wiring instructions and the lights worked as suppose to. Recommend these ballast as fit like a charm. Pretty much anybody would have the skill to install

The ballast in our 19 year old dual fluorescent kitchen light went out. After some research we settled on this item and was not disappointed. It comes with an easy to follow schematic printed right on the label. Took me a total of 45ish minutes between checking power, dismantling the light, cutting wires, splicing, reassembly, checkout, application of power and testing. The size was longer than the original, but it fits just fine. Lifespan wise, it's been a week and no problems, no flickering and is just as bright as the others. Be sure to match the bulbs with the ballast you buy. The wiring color doesn't have to match what you already have, but the bulb type does.

No issues with replacing the old one except I needed to supply my own wire nuts. The product works perfectly, installation was straightforward, and it was the best price I could find.

Product is fine. I felt bad because my envelope came opened, without the ballast inside so I think the seller has to eat the cost. Amazon should make the USPS pay for lost items. Anyway, I ordered another one from them.

Perfect fit, works well, easy to install. The ballast is same length as the old one but the unit is smaller. Hope it lasts a while.

Exactly what we needed. Lights are working again. Great price And fast shipping!!

Works great. With one caveat - the wiring changed. I replaced a ballast that ran two lamps in sequence and the mounts were connected together on the far side; and this one is in parallel. So, I had to mount this new ballast backwards (so the long red wire would reach the other side), pull out the existing wire in the lamp mounts on the far side, and jump them all together with a new wire and new marrette. You can't see it all once the cover is back on, it was just a little more awkward than I had hoped. Otherwise, for the price and value, a great buy.

Works perfect.

My light had completely died when it was on. Figured out was the ballast. Swapping was easy for someone with no electric background and now the light works once again. Plus the price was much cheaper than buying local.

Great deal

It works. We'll see for how long.