REHAU System 4500 uPVC window designs offer visual appeal and a variety of configurations for tilt-turn, hopper and fixed windows. Available with a louver system that is directly glazed into the frame pocket, the window design automatically accommodates packaged thermal air conditioners commonly found in hospitality. Matching System 4500 door designs allow for configuration into tilt-slide, inward- or outward-opening single- and double-panel entries. Incorporating compression-seal technology, System 4500 windows and doors provide thermal and acoustical performance, enhancing the guest experience in hospitality applications.