The ultimate protection from air and moisture infiltration under the threshold. 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.
Building Materials
100% waterproof, mold and mildew resistant Adheres to concrete, wood and metal surfaces Helps prevent sub-floors from swelling Helps stop air, moisture & bugs under threshold Helps stop entry/patio doors from racking
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