Plastic-Mart 12 Gallon Marine Holding Tank RH-B105

12 Gallon Marine Holding Tank Great 3/8ths wall Ronco Plastics Holding Tank It's a blank tank that we will install any needed fittings or ports, whatever you like! Email or give us a call and we'll send you out our blank fitting drawing for you to fill out. Fill the drawing out as best you can, send it back and we'll contact you to go over it. This helps ensure you get the product you want done right the first time around. Ronco Marine Holding Tanks have been around for 20 plus years and is considered the finest marine holding tank in the industry. You can't go wrong with a B105.