The K90 series offers its own forms and lines of traditional wood shutters, keeping all the advantages of aluminum in terms of functionality and maintenance. The innovative patented assembly system simulates the attack to ninety degrees connection of posts and stringers just like on wooden window frames, returning to the shutter an aesthetic synthesis that blends with any architectural style. The K90 Series is accessorized with rustic fittings and can be realized with open fixed slats and with overlap and planar adjustable slats.