Food truck menu HELP

How is everyone putting menus on their trucks? I printed 2 24”x36” posters, sealed them, then put them in frames and connected the frames with ultra strong outdoor Velcro. This lasted a long time and looked great but I knew it was temporary. I cannot afford to wrap the truck so that is out of the question. What do I order? Who should I order from? My health department requires the menus to be on/attached to the truck at all times and I would like to order something I don’t have to worry about changing for a long time.