How the Blind Size Calculator works
Inside mounts subtract a fitting deduction; outside mounts add overlap for better light control.
How to use this tool
- Collect accurate values for opening width, opening height, mount type.
- Enter measurements in the displayed units and select the choices that match this project.
- Select Calculate / Generate, then compare the outputs with the stated Blind Size Calculator method.
- Apply the result only after checking product specifications and real site conditions.
Example calculation or use case
For a worked Blind Size Calculator example, use Opening width = 1.2 m, Opening height = 1.5 m, Mount type = Inside recess, Deduction or overlap each side = 0.01 m. The tool then applies this method: Inside mounts subtract a fitting deduction; outside mounts add overlap for better light control.