Craftsman Door and Window Gasket Sealer 3 Door Guard Floor Mounted Door Stopper  (Brown)

You can save a lot of power if you are running an air conditioner in your room. An AC needs to work harder if there is air leak from the room, especially from under the door. Stop those air leaks and save money on electric bill. Blocks drafts from inside & out. Twin draft guard for doors & windows. Makes heating & cooling your home more efficient. The Twin Draft Guard is made from a washable fabric that is abrasion resistant. Not only does the draft guard help keep the heat in and cold out, it also keeps dust, sand, and bugs out while also helping with sound insulation.