Method and apparatus for mounting a pair of banners between upright members wherein the banners includes a flexing mechanism so that the banners can withstand high wind situations. Upper, intermediate and lower collars are mounted onto the upright members so that the intermediate collar can slide up and down along the column to allow the banner to flex. Each collar has a pair of cylindrical receptacles for receiving horizontal members so that upper, intermediate and lower horizontal members are provided so that the intermediate horizontal member slides up and down along the members in high wind situations. Elastic members connecting the intermediate and lower horizontal members stretch in high wind situations to allow the banners to flex.