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For over 50 years, Otto Graf GmbH has been delivering high-quality plastic products. In 1974, they launched an innovative range of rainwater harvesting products. GRAF is the market leader in Germany and Europe for plastic rainwater collectors. This water butt filling device effectively filters large contaminants such as leaves and prevents overflow. It easily switches between summer and winter use. The device accommodates roof areas of up to 50m. It has a 2.5cm (1'') side outlet with hose and screw connection, compatible with downpipes sized 7cm to 10cm. The device is available in grey.. Garantia Water Butt Filling Device Downpipe Filter - Grey Graf