L3++ Cryptocurrency Antminer profitable in 2019

L3++ Cryptocurrency Antminer profitable in 2019
Example of an homemade box for miner.
The loud antminer is in a plastic box. The only sound is from the vents which is not much but mobile is sensitive to sound.

S9 s9i l3 l3+ l3++ z9 mini a3
Mining rig
Asic miner
Bitmain

L3++ Cryptocurrency Antminer profitable in 2019