I am looking for info on the Okna 400 & 500 replacement windows.
What is the thickness of the extrusion used on the 400 &500?
Also what is the width of the frame+sash on both models?
Okna 400/500 info
- TheWindowNerd
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Re: Okna 400/500 info
I like the 600 better.
Is this for your own house?
Is this for your own house?
- Windows on Washington
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Re: Okna 400/500 info
Your installer will want the 500 at a minimum. For the very small offset in price, its the better unit.