Create a temporary dust barrier in just a few minutes; One person can set up 30 barrier in minutes; high quality and durability; sets up fast; no tape or ladders required; telescopic steel spring loaded poles; height ranges from 50 to 10 3 ; accepts sheeting up to 8 mils thick; each package contains (4) 10 steel poles (4) sets of parts (head plate tether and GripDisks) (1) box of 2 standard zippers and (1) carry bag. ZipWall is a patented Trade Mark of ZipWall Company.