HiMark 400 Windows Reviews
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The HiMark 400 window series is the entry level vinyl window in this somewhat exclusive line of windows. HiMark is an Okna window series that is sold through a somewhat more exclusive list of dealers, and the installation is done by factory trained installer (and must be installed by these Okna trained teams.)
The 400 series uses a slightly more narrow frame than the upgraded HiMark 500 series, which provides for more glass area, but at the cost of a bit of durability in the extrusion and a slight decrease in the overall energy efficiency of the window. The 400 HiMark has a few other very subtle differences, including weatherstripping and a couple little differences in available components and hardware options.
Consumers can expect good energy efficiency, especially with the DX model; .28 U-value, .30 SHGC and .05 air infiltration. In general, the HiMark 400 window is considered a good quality vinyl window that is on par with many manufacturers mid range to even premium offerings. The HiMark 400 Window Series gets a 4.3 out of 5 star rating.
Review By Jim R. - Site Editor
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HiMark 400 Window Ratings
The HiMark 400 window with the foam fill insulation, low-e glass and argon fills will deliver the following performance numbers: .28 U-value, .30 SHGC, DP45, .54 VT, and .07 air infiltration.
If you opt for the Deluxe package upgrade, you can expect the the U-factor to low to .22. These are excellent numbers for an "entry level" window, comparable to many other manufacturer's premium vinyl window offerings.