The Green See-Thru welding curtains are: *Made of heavy-duty translucent vinyl for excellent protection from UV radiation and blue light generated from welding activities. *Made to size. *Made with hems turned on all four sides. *Have Grommets positioned on 8 inch centers across the top and on 16 inch centers on both sides. *Recommended for medium to medium-high amperage welding applications. Frame sold separately. "Wilson curtains are made to order, cut to size and are non-returnable. Lead time is 2-4 weeks."