... your products when ur shops at closing time 2.high security 3.perssure resistant,burglar proof,wind resistant. polycarbonate transparent ... displays and stock,but require 24-hour ,365-day high visibility after closeing time,transparent shutter may be the ideal solution ... :display can be seen when shop is closed 3.High security 4.Virtually indestructible:fabricated from extruded aluminum,robust ...