The G-Floor Garage Door Threshold Seal/Trim creates a solid, physical barrier against water, snow, dirt, leaves, pests and other unwanted elements. Because the seal is attached directly to the floor, you have a better, tighter seal to prevent wind from blowing contaminants into your garage space. It alleviates any gaps or cracks where there might be an uneven surface. As an added benefit, our innovative Threshold seal keeps air drafts from seeping under, reducing energy costs throughout the year.