Z Flat Frame

By Coverly Shutters

The Z Flat Frame

What is a Z Frame?

A Z-Frame is named after the Z-shaped structure of the frame and is specifically designed for an inside mount.

“Inside Mount” means the shutter is mounted within the window frame, as opposed to outside it, creating a streamlined look. 

flat z frame option image  

The dimensions of the Flat Z-Frame can be found below:

z flat frame

Not all windows are suitable for the Z Flat Frame. Due to the nature of the frame, there must be no obstruction surrounding the window edges. This “obstruction” is typically molding/trim, tile, a door or another window (a window sill is okay). There must also be sufficient window depth for the frame to be mounted. 

The minimum depth requirements for a hidden tilt shutter are found below:

Note: These depth requirements are for a hidden tilt shutter.

A standard tilt shutter requires 1/4" less depth.

Painted/Stained Wood

2 ½” Louver

3 ½” Louver

4 ½” Louver

Flat Z Frame

1 ¼


2 ½”


Composite Wood

2 ½” Louver

3 ½” Louver

4 ½” Louver

Flat Z Frame

1 ½”

1 ¾”

2 ¼”


With a flat profile, the design does not intrude into your room, allowing for a clean, unobtrusive finish. The Z Flat Frame is the most popular frame choice for Coverly customers due to simple, beautiful style that works in so many homes.