OKNA 500 series question
OKNA 500 series question
does OKNA offer a triple pane vinyl with krypton? i know they have double argon.
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Re: OKNA 500 series question
the triple with krypton,thats in all vinyl? thats what i want,not the starmark even though iuts a great window.
what is the u-value of a triple pane DH with krypton in uPVC ?
thank you
what is the u-value of a triple pane DH with krypton in uPVC ?
thank you
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