Redstone series bi-fold patio door

The Redstone series bi-fold patio door is composed of multiple hinged panels that fold accordion-style to expose partial or entire walls. The latest line from Windsor Windows & Doors is offered in a variety of sizes and configurations, as well as three hardware finishes, 37 clad colors, eight anodize finishes and three wood interior selections: clear select pine, natural alder and vertical grain fir.