Okna Windows & Doors
Headquarters: Bristol, PA
Product Lines: Vinyl and composite windows and doors.
General Information: For 20 years, Okna Windows Corp. has been producing vinyl and composite windows and doors with some of the lowest U-Factors and air infiltration ratings available, the manufacturer reports. The company distributes through a dealer network located in New England, the Mid-Atlantic States and the Midwest. It operates out of two manufacturing facilities occupying more than 100,000 square feet in Bristol, Pa.
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