Nomex Made with Kevlar Sheet 340 GSM Fire Safety 45" x 60" Aramid Fiber Welding

This is a sheet of aramid fiber fabric made with PBI-Kevlar and Nomex used to make smoke and fire curtains for the United States Naval Sea Systems Command for their ships but can be used for other smoke proof and fire proof safety applications. This sheet is 48 inches by 60 inches which is 20 square feet. It is in yellow. This fabric has a national stock number of 4210-01-306-7826 if you want to check specs. It is 340 grams per meter. I have other pieces from small squares to other sizes as well as complete smoke curtains, please contact me if interested. All pieces are 48 inches wide and have lengths up to 160 inches at the time of this posting. I can cut to desired lengths with widths of 48 inches. Here is PDF Doc about development of the curtain by US Navy and specifications - https://apps.dtic.mil/sti/tr/pdf/ADA211549.pdf