Lift & Slide sliding door system provides superior thermal insulation, compared to standard sliding doors. Large maximum sash dimensions make this system ideal for enclosing large areas, letting in more natural light.

A regular sliding door uses a static rail fixed at the bottom of the outer frame. The door is supported by small rollers under the vent which move along the bottom rail. To maintain sufficient water and air tightness, sliding doors have very little clearance between the rail and the vent, creating significant friction and rubbing of the seals, even on brand new doors.