YKK AP America Inc.’s YSD 600 T thermally broken, low-threshold sliding glass door incorporates accessibility into designs. It provides structural capabilities without reinforcement. The YSD 600 T sliding glass door accepts standard tempered 1-inch-thick insulating units. All panels, fixed and operable, are shop-fabricated and can be pre-glazed. It features a ThermaBond Plus thermal break and has a U-value of 0.51 BTU/hour/foot/F.