Garantia – products for a sustainable garden

Rainwater Harvesting in Style

Stylish Tanks - Choose your tank from more than 80 shapes, coloures and sizes!

Discover the garden diversity of GARANTIA.

GARANTIA offers a huge range of composter for every requirement - proven a million times!

Useful helpers in the garden.

Professional rainwater harvesting. For use in garden or home.

Infiltration systems relieves the duct systems and you can save costs for the fess.

Do you need rainwater retention? We have the solution!

For properties without canal connection with few or irregular wastewater, are the wastewater-septic tanks a ideal solution.

There's a stylish tank to suit all tastes: Choose your tank from more than 90 sizes, shapes and colours

Interactive calculation of your rainwater tank size and money saving.

Our products are manufactured in an extremely resource-efficient way.

"Made of 5,000 recycled pots of yogurt!"

Efficient production thanks to modern facilities

From January 2026, the 4rain product range will be integrated into the GARANTIA brand's product range and website.

4rain and Garantia are trademarks of Otto Graf GmbH.
Nothing will change for our customers – the product range, quality and service will remain the same as usual.

Otto Graf GmbH Kunststofferzeugnisse
Tel. +49 7641 589-0 Fax +49 7641 589-50	info@garantia.co.uk www.garantia.com/en	Carl-Zeiss-Straße 2-6 DE-79331 Teningen