This is a mounting system for a antenna. I use it to get the antenna of my tinyGS System to the outside.
I have mounted it onto the air vent of my kitchen.
The air-vent has a size of 154mm x 154mm x 8-10mm
The frame fits directly onto it and can be locked in with screws.

There are 2 Versions:

• with heat set inserts for M3 screws (heat set dia about 4.2mm)
• without heat set inserts directly for 3mm screws (Hole size is about 3.2mm in dia)

The extension can be moved around on top of the frame. This helped me moving the antenna more to the side.

Printed in PETG