Antminer ASIC Crypto Miner Silencer Wall-Mount Kit for S21 S19 L9 KS7 (8" Intake + Exhaust Shrouds) v3.5Transform your ASIC's efficiency and sound levels with our wall mountable shroud! Say goodbye to LOUD & INEFFICIENT stock fans and hello to QUIET & EFFICIENT airflow. Our shroud helps you route your ASIC fan channels, including the PSU, into an 8" duct. With this shroud, you can capture all the hot air and keep your system running smoothly. 3D Printed in durable PETG 8" inline fan sold separately What makes our shrouds different than others? EXTREME