They adjust to any desk size. You can get them at Office Max. It sits on top of your desk or you can get a desk that elevates. You put your laptop on top of and it extends it above. I've been thinking about it for a while too. Here's one https://www.amazon.com/VIVO-Adjustable-Converter-Workstation-DESK-V000K/dp/B075JYG2TB/ref=asc_df_B075JYG2TB?tag=bingshoppinga-20&linkCode=df0&hvadid=80539278509610&hvnetw=o&hvqmt=e&hvbmt=be&hvdev=c&hvlocint=&hvlocphy=&hvtargid=pla-4584138857549776&psc=1 on Amazon: