Take note of our top-edge finishing technique for our top to bottom welding curtains: First, we weld a solid PVC material to the Weld View film, creating a sturdy, non-stretchable seam. Next, we reinforce the 2-inch hem with a 2-inch webbing and stitch the hem on through the welded seam to prevent perforation and tearing of the film material. This construction ensures a longer lifespan for your welding curtains.