i got it from bubbly clean which supplied the trolley tank and tray, and whom can supply the whole system if needed. The best thing about it is the trolley which is light and versatile. Ideal for domestic work. The tray has a drain hole through the bottom of the van, which is handy. If you need any contact details then ill pm to you. Thier web site will be up and going soon, now that the trolley is fully patented. I was going to coat the floor of the van out but i got the tray made which i can move to a new van which will be the same because i like the size of it for window cleaning.