Solar Plastics poly tank. There is no cap for this tank. The opening on the top of the tank measures 5.4" inside diameter; the outside of the threads measures approximately 5-3/4" outside diameter. 'S6 88' is molded into the tank body. This item is dirty on the outside from storage.
Capacity 11 Gallons
1 Port on bottom with 3/4" NPT Female, 1" NPT Male fitting.