How to Adjust the Keeper in a Cambridge Hung Window 

Aligning the keeper with the lock for a secure, tight fit is the one important adjustment that might be needed on a Cambridge hung window. Join David Barnes as he explains how to adjust the window keeper.
Founded in 1982, Viwinco Windows designs and manufactures custom-made windows and patio doors for new construction and replacement applications in the residential and commercial markets. Varied product lines are offered, including Viwinco's impact-resistant OceanView line. Styles include double-hung, single-hung, casement, fixed geometric and picture windows, and more. Production occurs in Viwinco's 140,000 square-foot manufacturing facility, which is home to the company's in-house laminating and tempered glass operation. Viwinco is headquartered in Morgantown, PA.
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