Download the BFM IG Calculator
Use the IG Calculator (Installation Gap) to determine the correct installation space for your BFM fitting. The calculator is available as an app for mobile and desktop devices. Save your calculations as PDF files for later reference. Note: The calculator is designed for installations with only horizontal movement. Contact us for more information on vertical movement.
The app is available for various devices. Select the version you want to download below.
Download for mobile:
![](/Documents/images/Download-IG-Button2.jpg)
![](/Documents/images/Download-IG-Button1.jpg)
Download for desktop:
![](/Documents/images/Download-IG-Button3.jpg)
How does the app work?
If you're using the calculator for the first time, we recommend watching the video 'Choosing the Right Connector'. If you need additional help using the calculator, you can also download the manual.
Download the manual