These Self-Adhesive Zips allow you to quickly create a doorway in plastic dust barriers, providing easy entry and exit. Simply remove the paper backing and stick the zipper to the plastic barrier. Then open the zipper and cut the plastic to make a door. Depending on the spacing you choose between the two zips, you can create a person sized doorway using one zip, a roll up door with 2 zips, or space them even further apart for something larger. These Heavy-duty Zips are double sided for ease of use, red for high visibility and have a strong adhesive area that allows for an aggressive tack. Their all-cloth construction provides maximum durability, making them ideal for high-traffic areas. Suitable for many uses including New Builds, Renovation, DIY, Scaffold Sheeting Door, Polytunnels, Temporary Constructions, Scenes of Crime, and many more! Product Details: • Box of 2 x Red Heavy Duty Self Adhesive Zips • Double Sided Zipper • Strong Adhesive Backing • 75mm Wide x 2100mm Long • Perfect for making doorways in dust screens or polytunnels