More durable than door mounted weatherstripping, our floor mounted, precision engineered vinyl Garage Door Threshold Seal provides a tight, long lasting barrier between your garage door bottom and floor. The weight of the garage door presses down on the threshold seal, filling the gap and preventing dirt, leaves, water, and critters from getting under the door and into your garage. This Garage Door Threshold Seal performs from -40° to +140° F, and is resistant to gasoline and oil.