Walls + Forms offers a WindFrame with a spring base that enables sign flexing to prevent high winds from knocking over the display. This high endurance sign system is ideally suited for outdoor applications. It features front opening snap frame technology so graphics to be changed quickly, securely and with ease. The frame is double-sided, heavy-duty aluminum. The feet have rubber non-skid stoppers. The system is designed to hold materials from 28 inches by 44 inches to 26½ inches by 42½ inches.