Interior sliding door systems. Ermetika’s Evolution double system is made of two opposite systems hosting parallel sliding doors that converge to the centre when they are closed. The Evolution Double Door system is the innovative solution for large spaces. It enables adjoining rooms to become one. T With the simultaneous opening accessory, the double doors move together when sliding just one of the doors, creating a wider room from two adjacent ones. Evolution Double Door enhance your every day life by offering more living space.