Put a doorway anywhere on your barrier using the self adhesive ZipWall® Standard zipper. Just remove the paper backing and stick the zipper to the barrier. It's easy, and since everyone knows how to use a zipper, no one will cut through, knock down or teardown your barrier trying to get through it. The Standard Zipper is great for interior barriers where the temperature is above 55 degrees. This zipper is included in the 4 Pack Plus.