4340 Single-Hung Window
The 4340 vinyl single-hung window is a DP40 version of the popular 4300 single-hung window that offers crafted features for exceptional durability and energy efficiency for new homes that require enhanced DP ratings. With standard features that include a pre-punched mounting fin and constant-force balance system, the 4340 single-hung is made for both builders and homeowners in areas that require high-performance windows.
You don't have to sacrifice aesthetics to have durable windows for your home. MI Windows' 4340 vinyl single-hung window is available with several standard grid options, five high-performance glass packages, and a variety of colors, so you can have a beautiful window with on-trend colors and styles that is also a high performing window.