The 672BLANK fresh water tank is sold without pre-installed ports. To add ports, you can use our Universal Holding Tank Fittings Kit, which allows you to customize the tank with the necessary bulkhead fittings for secure water connections. This kit is compatible with black water and grey water tanks as well, offering versatile installation options. Additionally, Elkhart RV Parts offers a variety of high-quality fresh water tanks designed for RV use, and you can use the Tank Finder tool on our website to select the best tank on your trailer’s dimensions and capacity needs. If you need assistance selecting or installing parts, our team is available to help ensure a proper fit and function.