How to Measure for Tier-on-Tier Shutters
Achieve the perfect fit for your tier-on-tier shutters with our simple, detailed measuring guide. These shutters offer flexibility and style, and our easy steps will ensure a flawless fit for a stunning window transformation.
Important Notes

Important Information
Inspect openings for any obstructions such as window furniture, inward opening doors or existing architrave etc. Shutter style, frame choice and blade size all have implications on how the shutter is installed.
*Please note that these measurements instructions are not suitable for bay windows

Frames
L Frames and Z Frames are suitable for inside recess.
A standard hardwood frame is 60mm deep; 63mm blades do not protrude out the back of the frame.
A standard fauxwood frame is 49.8mm deep; 63mm blades do not protrude out the back of the frame.

Check depth of reveal clearance
Minimum clearance for blade size are as follows:
- 63mm—18.05mm
- 76mm—24.4mm
- 89mm—30.8mm
Tier-On-Tier - Inside Recess - All window types
To mount the Shutter inside your window recess follow these instructions.
Step 1

Check for handle obstructions
Inside mount showing L-frame and Z-frame position, ensuring that window does not interfere with the action of the shutters.
Step 2

Measure the Width
Measure the width of your window recess in three places. Use the smallest measurement as your width
and deduct 5mm.
This is your width measurement.
Step 3

Measure the Drop
Then measure the drop of your window recess in three places. Use the smallest measurement as your
drop and deduct 5mm.
This is your drop measurement.
Step 4

Enter your Measurements
Go to your chosen product, enter your width and drop measurements.
Step 5

Split Height
Your tier-on-tier shutters have a fixed horizontal bar, called a T-bar, where the top and bottom panels meet. The split height tells us exactly where you'd like that bar to sit.
Measure from the bottom of the window opening to the centre point where you’d like the T-Bar to sit.
By default, the system will split halfway from top to bottom, but you can change it depending on the design of your window, i.e. if you have a Sash rail.