ASSA ABLOY Fenestration supplies OEM hardware solutions for window and door manufacturers, bringing together the Interlock USA and Caldwell Manufacturing Company businesses. The Caldwell brand has specialized in hung-window balances since 1888, while Interlock develops hardware solutions for sliding and other window and door applications.
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Four-Jaks IncFour-Jaks Inc. is a family-owned, U.S.-based manufacturer that has produced parts for the fenestration industry since its founding in 1994. The company is especially focused on window and door hardware, including injection-molded parts and balance systems, and emphasizes quality and customer-specific production.RONCEVERTE, WV
Harvey Building ProductsHarvey Building Products is a corporation of window and door manufacturers serving distributors, dealers, contractors, builders, and homeowners. Its family of brands includes Harvey Windows + Doors, established as an extension of the company in the 1980s, SoftLite, which has manufactured windows and sliding glass doors since 1934, and Thermo-Tech, manufacturing since 1993. The company operates four manufacturing locations in New England, Ohio, and Minnesota.BENSALEM, PA
Graham Architectural ProductsGraham Architectural Products designs and manufactures commercial and architectural-grade window systems, doors, and window walls. With more than 50 years of expertise, the company is particularly known for historically accurate window replication combined with energy-efficient performance, and also develops engineered fenestration for new construction.YORK, PA
Joseph Machine CompanyFamily-owned since its founding in 1986, Joseph Machine Company has spent four decades building automation for North American manufacturing from its Pennsylvania base. The company is especially rooted in window and door production, where it designs U.S.-made equipment to process the extruded profiles used by fenestration manufacturers and other industrial customers. Its approach combines in-house engineering with long-term parts and machine support.DILLSBURG, PA