Twin Draft Guard works twice as hard as a single sided draft stopper for keeping cold air out of your home. Home Trends unique twin guard prevents cold air drafts both on the inside and Twin Draft Guard fits all types of doors, and be cut to any size width up to 35.5". Twin Draft Guard is easy to install; simply slide it under any open door, and it will stay in place until you remove it. Draft Guard is practical too - just remove the cover and wash in your machine when needed.