41215 is a 15 gallon waste tank measuring 24.25" 15.25" 8.50". Moeller now offers an extensive line of water and waste tanks to meet most all size requirements. All tanks are molded of FDA approved linear polyethylene which meets the CFR177.1520 criteria. Waste tanks feature a heavier wall thickness for strength, and a 3" inspection port on larger capacity tanks for your convenience. The standard NPT openings accommodate our hose adapter kit (not included). Use the custom fitting kit to change the location of the fittings.