Quality assurance TÜV-GS tested Naturally, all HÜPPE shower enclosures have a TÜV-GS certificate. But in addition to this, all HÜPPE products undergo rigorous internal testing that far exceeds the standards stipulated for the various door systems - a guarantee of top quality and safety! CE Marking By displaying the CE marking, HÜPPE is declaring its compliance with the requirements of DIN EN 14428 for shower enclosures. Recycling Certificate 2009 Transport packaging This recycling certificate is used as proof for the disposal contract agreed between HÜPPE and INTERSEROH Dienstleistungs GmbH and absolves HÜPPE clients from any disposal costs relating to packaging materials delivered by our company. 10-year parts availability guarantee HÜPPE offers a 10-year parts availability guarantee on wearing parts. We guarantee that wearing parts for HÜPPE products, which are presented in a special catalogue, can be ordered and supplied for up to 10 years after purchase of the product. Leak test The leak test demonstrates that the water stays inside the shower enclosure. Reliability A door undergoes a 30,000 movement non-stop test to check its operation. Endurance test Endurance tests are used to check that the shower tray does not deform when subjected to constant loading. Sandbag test The sandbag test checks that glass and styrene do not fall out of the frame in the event of a fall.