Doors Sliding Patio Doors Kolbe’s sliding patio doors are a space-saving way to connect your indoor and outdoor living spaces. Swinging Patio Doors Swinging patio doors swing in or out to provide convenient access to the outdoors. Multi-Slide Doors Kolbe's multi-slide doors not only provide attractive aesthetics, but also ease of operation and superior quality. TerraSpan® Lift & Slide Doors The revolutionary TerraSpan lift & slide doors stack or pocket up to ten door panels for extremely expansive openings. Folding Doors Folding doors provide expansive outdoor views while making an architectural statement indoors. Entrance Doors Entrance doors make an immediate, dramatic statement. Our custom styles create an even grander entrance. Fiberglass Doors Fiberglass doors can be designed as a focal point for a home's front entry. Alternatively, fiberglass doors can be used for patio passageways, utility doors, and more.