Dual Guard has a unique patented flange which acts like a gasket, sealing off the sub-floor and preventing air and moisture infiltration under the threshold. This helps keep the door frame from racking and the sub-floor from swelling and warping.

Exceeds all building codes and manufacturers installation specifications
Energy efficient to reduce monthly utility costs
Helps stop air, moisture and bug infiltration under the threshold
Adheres to concrete, wood and metal surfaces
Helps prevent sub-floors from swelling and structural framing from warping
Helps stop entry/patio doors from racking and costly call backs for additional adjustments
Self adhering for precise placement and easy application
100% waterproof, mold and mildew resistant
Designed for all entry/patio doors.
Available in a 25' roll and a new 7' roll, perfect for two entry doors or one patio door