This 4000-litre above-ground water tank is made of high-quality polyethylene. As a result, these rainwater tanks are durable, rot-proof and resistant to UV radiation. The tank can therefore be installed both indoors and outdoors. Despite its compact footprint, it allows a substantial amount of water to be stored. These tanks are ideally suited for the storage of rainwater for technical use in the home or garden, as well as for professional applications. Multiple tanks can be interconnected to achieve a larger storage volume.