The ProSlide Series 2021 System is engineered to provide long life and quiet operation for the most demanding commercial applications, along with attractive sightlines and a variety of finishes to complement any design. The ProSlide’s commercial-grade operator is capable of handling panels up to 300 lbs. The system’s 4.5” jambs virtually vanish in standard storefronts for enhanced aesthetic appeal. In addition, the ProSlide features an exclusive adjustable astragal with a double weatherseal in the lead rail of the sliding door panel for optimal condensation, air infiltration, U-values and improved energy efficiency.