The future-oriented inventions by company founder Harry Frey have an authentic development background. He had a leg injury which led to his stumbling and falling over a threshold. This negative experience caused him to find a solution for the threshold problem. In 1980, Frey - together with his wife - founded the company specializing in sealing for windows and doors. As early as 1988, his first magnetic door seal for barrier-free passage of internal doors could be launched on the market. After this success, Harry Frey took on the development of a sealing solution for barrier-free passage of external doors, a difficult field of engineering regulated by complex building laws. He reached the ambitious goal after only nine years with his magnetic double seal providing absolute security regarding water, air and noise consisting of two magnet profiles and two additional seals. Since 1989, ALUMAT-Frey GmbH has had positive experience and diversified fields of use with completely different types of buildings both new and renovated with the innovative product. As the inventor of the magnetic double seal, Frey is the patent owner and thus the only supplier of this prefabricated, barrier-free door seal.