Established in 1986, Optimum Window Mfg Corp. conducts its business in the steel windows industry. Based in Ellenville, N.Y., it is one of the largest manufacturers of fire rated windows in the United States. The firm manufactures products in metals, such as aluminum, steel, bronze and stainless steel. Additionally, it offers a wide variety of door and window products under categories, including the Fire, reliant, FLeX and Metro series. Apart from these, it works with architects to custom design doors and windows. Optimum Window Mfg Corp. is affiliated with the Steel Window Institute and the National Glass Association.

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