Step 3
There is a M4 threaded holes on the other 2040 aluminum profile.
When installation, make the threaded hole face the metal sheet part.
1. 2040 aluminum profile--length 45mm (1pcs)
2. M5×16 hexagon round-head screws (2pcs)
3. M5×10 hexagon round-head screws (2pcs)
4. M4×8 hexagon socket round head screws (4pcs)
