The Okna Starmark or 900 Series is the composite window from Okna - its a bulky frame, but does off clean sightlines. It comes in four exterior color options and either a white or wood laminate interior, which does a good job of mimicking the texture and look of real wood. The Starmark also offers some very nice hardware options and can be ordered as a double hung, slider, casement or bay/bow option. The double hung gets a .25 U-value, .28 SHGC, .05 AI and .50 VT. The Starmark is at the top of the list when it comes to quality composites.
Okna Window Prices