The Okna 800 Enviro-star window is the premium vinyl replacement or new construction model from Okna that is one of the nicest looking vinyl windows on the market. Standard features include a multi chamber mainframe, a 3 1/4" depth mainframe, beveled colonial style frame, a full intregral interlock, recessed tilt and vent latches, single piece sloped sill, composite sill reinforcement, double strength weatherstripping, and magnetic seals.
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In terms of the Okna 800 vs 500 window, the 800 Enviro-Star has a heavier extrusion, which will provide more structural integrity. Performance wise, they are going to be close on paper, but the 800 is the better of the two.
The Envirostar is available in a number of different hardware options, including multiple metal options that are very attractive and include brushed nickel, an adobe gray, matte bronze and antique brass. Consumers can choose from 8 exterior frame colors and four interior color options, including a white, natural wood laminate, cherry laminate or a cognac laminate. All of these interior wood laminates are quite realistic in terms of looking like a real wood grain, without any of the maintenance required of real wood.
The Enviro-star comes with a factory installed half screen or an optional locking screen. All in all, the Okna 800 vinyl window is one of our favorite vinyl replacement and new construction window options, if you can afford the rather steep price tag.
Review By John M. - Site Editor
Consumers can expect the Okna 800 window to run approximately $60 to $70 per square foot for the window itself. Comparably priced windows include the Soft-Lite Elements prices and Sunrise Restoration window costs.
-- Window Itself: $600 to $800 --
The Okna 800 Enviro-Star series achieves very impressive ratings, including a .25 U factor, .25 SHGC, .42 VT, and Air Infiltration of .01. The Enviro-star is going to be Energy Star Compliant in all four regions.
In terms of design pressure, consumers can expect a DP rating of 60. Okna offers two different glass packages, including the standard and the upgraded deluxe that will drop the U-factor to .18.
The Okna Enviro-Star includes a lifetime warranty that covers the frame & sash for the homeowner's lifetime. The insulated glass units are covered for the homeowner's lifetime, as well as the hardware. (Hardware near the coast is only covered for a period of 10 years).
The 800 model warranty is fully transferable to another homeowner. As always, there are exclusions to the warranty that consumers should thoroughly read and understand before they purchase their windows. The installation labor costs is not covered under the terms of the warranty.
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