Door Bottom Sweeps are used to seal the gap at the bottom of your door to prevent infiltration of sound, light, drafts, insects, moisture, smoke or fire. They close the space at the bottom of the door and keeps the weather elements from coming inside. The door does not have to be removed for a door sweep to be attached. The sweep has a brush or is padded, and as the door closes the brush contacts the threshold edges. Using a door bottom sweep is a simple and inexpensive way to aid in insulating a room, which provides major cost and environmental benefits. Door sweeps seal the space around bottom of walk-in cooler and freezer doors between the door and threshold.