Ronco RV water tanks are rotomolded tanks made from FDA approved virgin polyethylene resin. Rotomolded tanks are created blank to start and you can purchase a tank with no fittings if you like. The best part about Ronco is they'll custom install your fittings to your specs. Simply fill out a drawing indicating sizes and locations. It's that easy and quick as well. Ronco tanks usually ship in approx. 7 business days (give or take a day or two depending on the season).