SHUTTERS ARANGED IN 2 HORIZONTAL LAYERS ARE KNOWN AS TIER ON TIER
Tier on Tier Shutters: have horizontally split panels, that is one arranged so as to be sitting directly above the other, they may or may not have a horizontal post between these "flights" The flights are independent of each other.
The top and the bottom of each level can be opened individually. This form can also be had on bay windows and bifolding too as seen in our gallery below. Tier on Tier has a drawback in that each shutter panel frame's add to the mid window block of light the top and bottom rails can make for a six inch (150mm) wide band.
This pattern is best fitted to the reveal edge to allow folding back to the wall to keep open shutters out of the way - inside reveal fitting can mean the shutter protrudes into the room at 90°
You can get similar results, to is the panels' louvre tilt actuation mechanism (tilt rods) set split at any height, converting full height shutters into faux tier on tier and enhancing privacy options. Using this "trick" the 140mm (6") band of wood from the tops and bottoms of the shutters are eliminated. We go through that in detail during our free Survey