PVC strip ribbed also called double ribbed, is a clear strip with ribs lifted. These bones help keep the strip looking for a clearer and prevent the strip from sticking together. When the mobile equipment through this strip, it affects the first rib, so that the flat part of the strip is not exposed to the bottom. This extends the life and the clarity of the strip as much as 20% longer than ordinary PVC strip curtain, making it great for heavy traffic applications.