Founded in 1996, Keystone Building Products, Inc. supplies materials to the manufactured and modular housing industries, as well as professional builders. Operating from locations in Selinsgrove, Pennsylvania, and Salisbury, North Carolina, Keystone offers a range of building products, including exterior and interior doors, windows, siding, shingles, shutters, kitchen cabinets, siding accessories, vents, and aluminum components.

Among the company’s featured offerings are High Rock Doors, a fiberglass entry door line designed for durability, energy efficiency, and aesthetic appeal. High Rock Doors combine the look of real wood with the strength of fiberglass and are available in multiple glass collections, including:

Clearview Collection – Clear glass for an unobstructed view and natural light.
Heritage Collection – External grids for a classic divided-pane look.
Timeless View Collection – Grilles between the glass for a traditional style with easy maintenance.
Thermashade Collection – Blinds sealed between glass for light control and privacy.
Signature Collection – Decorative glass options such as Portrait, Serenity, and Onyx, each with unique patterns and textures.
Installer-focused features, such as reveal spacers, LVL continuous lock blocks, and QR codes linking to installation and warranty information, help ensure a precise fit and simplify the installation process.

Keystone maintains an in-stock inventory and offers special-order capabilities to meet a range of project requirements. Their stated aim is to pair product availability with competitive pricing and knowledgeable service.

For more information, visit keystonebldg.com.