Makes a dust seal in a doorway or a polythene screen. Allows vision and light through the door for added safety. Makes a dust seal in a doorway or a polythene screen. Allows vision and light through the door for added safety. Backing sheet is 1.1m wide x 2.1m high. 1 x 10m roll of double sided sticky tape included 1 Zip pre-attached. No need to stick zip to polythene & get it wrong! One person operation! Can be used for: New Builds, Renovation, DIY, Polytunnels, any doorway in a polythene sheet etc. 1 Zip Door Kit. Made by True Products (Trademark), Manufacturer: True Products