Q: Do you have drawings of the "cabinet" side of the 4U and 8U rack rails? (The side that mounts to your rack case, not the "gear" side.
A: We do not have drawings of this angle. This side of the rail does follow standards in regards to the hole placement for mounting to a cabinet.
Q: Do these 1/2RU Spacing rack rail come in longer sizes? Would be looking for 14U, 12U, and 8U.
A: Yes, we offer 1U through 24U, here: https://www.audiorax.com/rack-rails