Bertha™ HV™ Accordion Shutters –  in our opinion,  the finest accordion shutter system on the market today.  With the Bertha™ HV™ Accordion Shutters, corrosion is not an option.  The assembly screws can be easily lubricated, ensuring continuous and reliable operation and protection when you need it most.  The finish on the Bertha™ HV™ Accordion Shutters is the finest in the industry and the system offers the only two-step locking process in the industry.   The system stacks tightly, so you maintain the clean look of your home or office.