Using the space under the building's stairs to install a water tank can be a suitable and smart choice for any building manager. These spaces are generally either completely unused or turned into warehouses for storing useless items in many buildings. Due to the limited space, it is necessary to check the dimensions of the tank and the installation space before buying the water tank under the stairs. Also, the design and shape of these tanks is such that it is used in places such as parking lots and utility rooms that have limited space, in addition to under the building's stairs.

These tanks are usually used to store drinking water in buildings, and due to the ineffectiveness of a wide range of chemicals on polyethylene, it is possible to store many chemicals in under-stairs tanks.

All multi-layer tanks, including Radmehrplast's under-stair tanks, have a black middle layer that is resistant to sunlight. Of course, you can also use single-layer tanks in places where there is no direct sunlight, but considering the small price difference between single-layer and multi-layer tanks, we recommend using Radmehr Plast's antibacterial and anti-algae multi-layer tanks.

Except for under-stairs tanks, other tanks that have a low height, similar to horizontal tanks, ovals, etc., can be used as replacement tanks, provided that they are placed correctly in the intended space.