Bought one of these a couple of weeks ago, beware they are only sold as 25litre so they might be a bit short on headspace if used for primary fermentation. Mine was only purchased because it was short enough to fit into the 150litre esky I'm curruntly using to beat this hot weather (happy to make a couple of 18-20litre batches if it means production continues). Otherwise they are a good product.
Planner
2 of my 3 primary fermentors are these. They do a 23L batch no problems. Haven't measured it exactly but filled to the brim they are about 28L.
Also I don't use the lids on mine, I use the rubber band and glad wrap.
QldKev