Receive a free upgrade to the auto-lock on MI’s 5500 Single-Hung & 5800 Single-Slider Windows.

Available with a 2 ½” contoured flush fin, 1 ¾” flush fin, or finless frame. One auto-lock per window.

MI Windows and Doors is excited to announce that we are offering a free upgrade to the auto-lock on our 5500 single-hung and 5800 single-slider windows. The auto-lock enhances security by automatically engaging to a locked position when the sash is closed. This free upgrade is available on our Pro5000 series windows with a 2 1⁄2” contoured flush fin, 1 3⁄4” flush fin, or finless frame and is valid July 29th through September 29, 2019.

Promotion valid July 29–September 29, 2019. Does not apply to stock-sized products.