Easy peel-and-stick adhesive zipper system creates an instant door in tarp or poly enclosures.  Zipper measures 80″ Long ; 2.75″ Wide.  Self-adhesive backing.  Used to make doorways/access points in poly and Mylar liners, or tarps of any kind.  Great for creating a lightproof doorway between separate grow area sections.

Simple to setup
(1) Lay tarp/material on a flat surface
(2) Stick the adhesive to the tarp
(3) Unzip the zipper
(4) With a razor, cut the tarp within the zipper opening