This is BOWSEN brand garage door weatherproofing seals, Protect your vehicles and valuables with our Garage Door Threshold Seal. These easy-installing, streamlined garage door seals lock in heat during the winter and cool air during the summer. Door guards create a barrier of protection against water, leaves, dirt, and snow Saves energy in heated garages Weather stripping is normally added as a sealing measure to the edge of the door where it is most common to find gaps at. In addition, it will eliminate any rain water from coming inside and possibly cause damage to your belongings stored in the garage.