3502 Expo™ Banner is a 12 mil, flame retardant (B1 and M1 certified), ultra durable, water resistant banner. The M1 certification is the best in class certification for flame spread and a common requirement for trade shows and other public installations. 3502 has a bright white, outdoor durable coating and a flexible, tear resistant base, making it ideal for applications ranging from rollup displays to outdoor banners.