It seems to made ok I guess possibly little thicker, but the manual is worthless, the sump purpose that I can tell since no where can I find how to utilize it. It's about the size of a cereal bowl at bottom of tank if you plan to mount on a trailer you'll either need to build platform or cut hole in deck, the only purpose I can tell is it would allow debris to gather in it with no possible ways to drain it without the aid of a additional pump to remove some of the left over solution, then you'll need to stick arm or something else down fill port at the top of tank to remove what's left over and to also remove debris as there is not any drain port to make clean-up easy and fast per write up from manufacturer. This was a very disappointing product that's going to be a huge pain in the long run suggest not buying this. By no means do I blame TS for this as they are not the manufacturer for this. Just be for warned don't buy this with sump unless you plan on extra work setting up with instructions that cover how to put lid on and putting on cap for drain port on side of tank btw instructions also cover how to take lid off but small problem if you need instructions to do that there inside tank so good luck. If this gets resolved to my satisfaction I'll update my review otherwise it will stay the same.