1.The best door guard that makes heating and cooling your home more efficient and cost effective. 2.This cold air wind blocker is easy to install and stays in place; no need to reposition. 3.Economical and environmentally friendly; save energy by preventing cold drafts from entering the house. 4.The draft Guard is ultra versatile; can be used on interior and exterior doors of all types. 5.This under door draft blocker also help to reduces light, noise, wind, cold air and smells.