Once you've designed your barrier wall system, make any size doorway to enter or exit the space. The use of our Zipper System allows an immediate entrance or exit to any enclosed area. Aside from containing dust and debris, this sytem also allows one to contain heat. Easy to apply and use, these doorway zippers are 3" wide and 83 inches long, and meet federal containment specifications for asbestos removal. We recommend the use of 2 zippers approximately 4-5 feet apart to create a roll-up door to facilitate ease of access/egress, especially when carrying equipment, such as ladders or poles--or when both hands are full and unable to push aside the single plastic door. There are two zippers to a box
