200' Long Crime Scene Plastic BARRICADE TAPE. Great for Halloween SCREAMING YELLOW BANNERS Each has black lettering stenciled on bright yellow plastic tape, with the message repeated over and over. They are 3" wide by 200 ft. All are the real thing, made for sale to police and other serious users. Some have an obvious industrial application, some will work in the school playground, some seem appropriate to cordon off the kids' rooms and they are great for Halloween.