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ErGear Single Monitor Mount Stand 13-39 Inches Gaming Monitor Arm, Heavy-Duty Aluminium Monitor Arm Hold 26.4lbs, Premium Gas Spring Mount with Two Desk Mount Options, Black Matte https://www.amazon.com/dp/B08DTSR7LD/ref=cm_sw_r_cp_api_glt_fabc_RD386TD381PDFKV569TQ?_encoding=UTF8&psc=1
3 of these
This is what I am using. 3 of these.
Most would tell you go Ergotron HX which is $200+. However, I went this one as it is actual rated for 40lbs+ despite the ad saying 26.4lbs. It holds extremely well, has two clamps under the desk to share the weight, has a cable management channel and a spot at the base to pass through usb cables. I would recommend a two person install as locking in the tilt is hard to do solo.
Monitor arms...not saying this one specifically, but like this
^Item&nbsp;Info | Bot&nbsp;Info | Trigger
I have a 48" Lg C1 mounted to this on a sit/stand desk. Has been working well for months. Don't waste your money on ergotron arms. https://www.amazon.com/dp/B08DTSR7LD/ref=cm_sw_r_awdo_navT_g_BQPCTKAN13FAGZ8F2P9S