Inside mount shutters are installed within the window frame, creating a clean, built-in appearance that sits flush with the wall. This installation method highlights the window trim and architecture while providing a streamlined look that recesses the shutter into the opening.
How Inside Mount Shutters Work
Inside mount shutters attach directly to the interior sides of the window frame using mounting brackets or a hidden frame system. The shutter panel fits snugly inside the opening, with the frame of the shutter sitting flush against the window casing. This installation requires the window frame to be square and deep enough to accommodate the shutter frame and allow the panels to operate freely without hitting the window glass or hardware.
Pros and Cons
Pros
- Creates a custom, built-in appearance
- Highlights decorative window trim and moldings
- Takes up less visual space in the room
- Allows for deeper window sills for decorative items
Cons
- Requires sufficient frame depth for installation
- Allows minimal light leakage around the perimeter
- May not work in windows that are out of square
- Difficult to install in windows with limited clearance
Depth Requirements
Standard inside mount shutters require a minimum frame depth of 1.5 to 2 inches to accommodate the shutter frame and mounting hardware. The exact depth needed depends on the shutter material and the type of tilt mechanism. Wood shutters typically require less depth than composite or vinyl. For shallower frames, special order options such as a Z-frame or L-frame adapters may allow inside mounting, but outside mount is often recommended.
When to Choose Inside Mount
Choose inside mount shutters when the window frame is in good condition and features attractive trim you want to showcase. This option works best in rooms where a furniture-like appearance is desired, such as formal living rooms and dining rooms. Inside mount is also preferable when window sills are used for plants or decorative objects, as the shutters recess into the frame rather than extending into the room.
Frequently Asked Questions
Can inside mount shutters be installed in any window?
No, windows must have sufficient depth and be reasonably square. Windows with crank handles that extend inward may also interfere with shutter operation.
Do inside mount shutters block light completely?
Inside mount shutters allow some light leakage around the edges because they sit inside the frame. For total blackout, outside mount or shutters with light seals are required.
How much depth is needed for inside mount shutters?
Most inside mount shutters require a minimum of 1.5 inches of flat frame depth, though some systems can work with as little as 1 inch using specialty hardware.