Series 3000 High Performance Sliding Door is an elegant high thermal multi-track sliding door designed for exterior applications. This high performance slider is designed for either fin or block frame applications, has thermally broken stacking head channels and bottom tracks to provide exceptional thermal performance, allowing for multi-slider combinations. It's rugged overall construction coupled, with heavy wall stiles and interlocks, create a truly monumental thermal sliding unit. Doors are equipped with multi-point locking system, heavy-duty adjustable tandem rollers, and floor track with stainless steel caps to ensure smooth operation during years of service.