Comparison Thetford Porta Potti Qube 165 vs Thetford Porta Potti Qube 145

The volume of the lower tank provided in the toilet.

The lower tank is intended for direct collection of waste. The larger it is, the less often you will have to clean the toilet from the accumulated contents. On the other hand, a large volume has a corresponding effect on the dimensions and weight of the entire structure. Therefore, manufacturers select the capacity of the lower tank in accordance with the type (see the relevant paragraph) and the intended features of the use of the dry closet. So, in mobile models, this figure rarely exceeds 20 liters, and in stationary models, tanks of 70, 120 and even 200 liters can be installed.

The height of the toilet seat relative to ground level. With a low seat height ( less than 40 cm), an additional stand may be required for comfortable use; on the other hand, such models are as compact as possible.