This 21-gallon black water tank is purpose-built for RVs where capacity and durability are essential. Constructed from tough ABS plastic with all seams solvent-welded, the tank delivers reliable waste storage without the leaks and failures that plague inferior designs.

The tank mounts using the 1-1/4-inch flanged base and features a 3-inch outlet spigot fitting compatible with standard dump station connections. Integrated level sensors indicate tank fullness, and all mounting hardware is included. The unit handles both black and grey water applications.

• Capacity: 21 gallons
• Dimensions: 70″ L × 17.75″ W × 7″ H
• Material: ABS plastic with solvent-welded seams
• Outlet: 3-inch spigot fitting
• Mounting: Flange mount with hardware included
• Features: Level sensors; suitable for black and grey water
• Colour: Black
• 1-year warranty; manufactured in North America