The universal freshwater tank fittings kit is recommended for the 98 Gallon RV Water Tank (59" x 58" x 7") because these tanks typically come without pre-installed fittings. Using the kit ensures you have all necessary components for proper installation and functionality.

Regarding tanks with a depth of 6 inches and a similar capacity, we currently do not have tanks exactly matching those dimensions. However, we offer compact tanks such as a 48 3/4" x 31 3/4" x 4 1/2" model, which may suit your space requirements with a smaller capacity. For tanks close to 100 gallons, you can browse our full selection of custom roto molded RV water tanks. These custom tanks allow flexibility in size and design to match your needs.

Please review product details carefully to ensure compatibility. If you need further assistance or a custom solution, our team is ready to help.