Otto Graf GmbH
Plastic Products
Tel. +49 7641 589-0
Fax +49 7641 589-50
Carl-Zeiss-Straße 2-6
DE-79331 Teningen, Germany

Professional quality rainwater tanks

The rainwater tank lies at the heart of every system. The first GRAF plastic underground tank was launched in 1978 and plenty has happened since then. A high standard of quality in production is an essential foundation for unique products. This ensures the good stability and precision fit of the individual components. We have even developed a new, unique production process for the Carat underground tank. GRAF manufactures first-class products: resilient, precision-fit and easy to use!

Carat XXL underground tank

Carat XXL: Flexibility and stability perfectly combined. 15-year warranty.

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