you need silent cooling or high power cooling the
answer is procool
Rack mount fans
Custom Cooling Systems
specializes in Silent cooling systems designed for
home theater applications as well as professional
studios. Procool fans provide the most airflow with
the lowest fan noise.
Custom systems for closets, media racks, server racks
and spot cooling components.
the other side of cooling, Procool excels with High
power cooling systems designed for servers and server
rack systems as well as pro audio where high airflow
is needed. Stock systems with 200+ CFM are the top
choice for server room applications. Custom systems
up to 300 CFM also available.