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Thank you for contacting us regarding the footprint/3D model for QM77 information that you have been looking for, it will be more than a pleasure to assist you with your inquiries.
In order to help you better please create and account and a ticket here:
The area of support that you need to reach is called ‘’Technical Resource Center for Designers, Engineers, and Developers”
On the link provided above you will be able to get the right support in order to gather the information that you need.
Hope this helps,