Accordion Tuff Shutter^™ Features:

• 6.8 system has one of the tightest blade stacks in the industry, the blades in the open position only take up one inch per foot including center mate.
• The 6.8 system features an offset screw boss that allows for lubrication of the assembly screw and isolates the hinge from the corrosion effect from dissimilar metal contact.
• Assembly screws are JS-500 plated over 410 HT w/zinc for better life span & increased durability.
• We use significantly heavier track system than the competition.
• Fast & simple locking procedure close centers & push in key lock.
• Most other shutters require a 6 step locking procedure.
• No lock bars required.