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Question DetailsAsked on 10/31/2013

What are the highest E rated double pane slider casement windows available?

We need to replace four casement windows in our basement.

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1 Answer


I do not know about e ratings. what you want is u-value and the lower the u-value the better the energy savings. we at Tri-Pane Installations inc. recomend the OKNA window with a .25 u-value as the best energy savings window. In N.Y.? free estimate 1-718-863-5278

Answered 6 years ago by the new window man

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