Astragal:
A strip shaped like a "T" that helps to eliminate light gaps between left and right pane when no rabbet stile exists (see rabbet stile).
Button Plug:
A plastic plug used to cover hole where tension screws are located.
Café style shutters:
Panels that cover the lower portion of the window.
Frame:
Used to support and or increase the window depth clearance allowing louvers on back side of panel to clear obstructions.
Hoffman Keys:
Shaped like a butterfly, they are fasteners used in connecting miter corners of frames.
Divider Rail:
A rail that adds strength to tall panels and divides them into two sections in which louvers operate independently of each other.
Double Hung:
Two independently operated panels, one mounted on top of the other.
Hidden tilt bar:
Tilt bar is “hidden" behind shutter panel and attached to the side of the louvers.
Inside mount:
A shutter mounted inside of a window opening.
Louvers:
The movable blades within a shutter panel that control light and privacy.
Mortise:
A cavity cut into the wood.
Mortised Hinges:
Hinges that require a mortise for proper installation (see mortise).
Mouse Hole:
A cavity in the rail in which the tilt rod rests.
Non-Mortised Hinges:
Hinges that do not require a mortise for proper installation.
Outside mount:
A shutter panel mounted outside of the window case.
Panel:
A shutter panel consists of at least two stiles, two rails, one tilt rod, and any number of louvers.
Rabbet Stile:
A profile cut into the stile wich allows them to overlap. Prevent light from penetrating between the panels.
Rail:
The horizontal top and bottom members of a shutter panel.
Repair Pins:
Spring loaded louver pins designed to retract flush for the purpose of inserting a louver into an existing shutter panel.
Sill:
Bottom horizontal member of window opening.
Stile-Louver Clearance:
Space between inside of a stile and louver end. Well constructed panels generally have 1/32" clearance
Stiles:
Vertical member of the shutter panel to which the louvers are attached.
Sunburst:
Radial louvered shutters, designed for Palladian openings.
Tension Screw:
A screw used to adjust the tension of louvers. They are recessed into outer edge of stile often covered with a button plug.
Tilt Rod:
A vertical bar located on the front of the panels attached to louvers. Used to adjust the position of louvers.
T-Post:
A vertical post used to support different sections of shutters in wide windows.
Track:
Metal hardware used to support panels from overhead in Bypass and Bifold installations.
Window Depth:
The distance from the surface of the wall to the closest part of the window.