SCHMIDT GmbH has been focussing on the development and production of lift and slide doors for more than 45 years. Contemporary design, maximum convenience, long-lasting functionality and certified quality - the QuinLine® lift and slide door offers customised solutions for both new builds and home renovations. The company's own, independent SCHMIDT profile system provides the basis for the sophisticated security technology, outstanding sound and thermal insulation and even passive house suitability. The associated detailed expertise and many years of experience are our foundation for continuous further development.