It's holding about 80 discs here, and expands to double the length. Would need some extra support if expanded though.

Front rail was removed from middle row to fit discs, back rail was left for support.

$20 on sale right now.

https://www.amazon.com/dp/B00O4WPYA6/ref=cm_sw_r_cp_apa_fabc_uab0FbZ2JZQAX?_encoding=UTF8&psc=1