Marvin combines classic style with high-tech performance in the Clad Ultimate Glider, featuring an extruded aluminum frame that glides smoothly and auto-locks shut. Recessed hardware and a low handle ensure easy one-handed operation and a clean design, the manufacturer says. The glider is available in seven wood species and 19 exterior cladding colors. It includes a patent-pending removable sash system for easy cleaning. 888.537.7828. www.marvin.com.