Headphone Hanger for 20mm Monitor/Desk Mount Rails

This is a headphone hanger designed for 20mm square aluminum rails, commonly found in monitor arms or height-adjustable desk frames (e.g., Spacetronik and similar systems).

Features:

✅ Fits 20mm square profiles

✅ Includes two versions:

Snap-on – quick, tool-free attachment

Screw-in – assembled with 3× M3 screws (30mm), ideal for mounting under an already installed desktop

✅ Uses M3 heat-set inserts for a secure and durable fit (in the screw-in version)

✅ Minimal, sturdy design – keeps your headphones accessible and your desk tidy

Notes:

Screw-in version requires 3× M3x30mm screws and M3 heat-set inserts. Perfect for mounting without removing the desk surface.