In the 20x20 series 5 aluminum profile, is the center hole threaded? What size? How do you suggest "closing" the corners? I don't see any 2-way or 3-way cube. Thank you for your attention
We have made the threaded ends option available; immediately after entering the length measurement you will find a box to check to receive profiles with M5 threaded ends (all specifications can be found in the information caption by hovering the mouse over the letter "i").
For corner connections, no 2-way or 3-way connectors are currently available for this series. You may possibly use cover caps (https://www.dhm-online.com/series-5-cava-6/1020-cap-2020-mm-per-profile-series-5-polyamide-black-pieces-5.html) and connect the profiles by means of angle brackets (https://www.dhm-online.com/series-5-cava-6/986-staff-2028-with-wings-90-for-profile-series-5-2020.html).