I purchased Newpro windows for all my downstairs windows June 2009, It made a significant improvement in keeping my house cool during the summer. With the Winter approaching, I already notice how well heat is being kept in downstairs rooms. Cold air leaking through my upstairs windows are now much more noticeable. I now intend to have Newpro replace the windows on the second floor. The Newpro windows are very easy to open and close.\r
Morton G
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