The original profile from 1993. Perfect for panels and budget friendly, the revolutionary 55mm DMK frame began the big hole revolution. DMK is suitable for panels and ideal for walls without fabric and glass or acrylic glass structures. The next step in the evolution of the 55mm family, the b55™ System, allows the use of both panels and SEG fabric in the profiles of the frames. The whole frame system is light and easy to combine with the original DMK profiles. beMatrix® continues to invest in updating and expanding its product range. This investment further extends the service life of your investments and fits with our philosophy of sustainability, service, and reliability.