The Intellinet Network Solutions ventilation units provide reliable cooling and ideal air circulation in 19″ cabinets for improved performance and longer life of your networking components._x000D_High-quality workmanship that includes antistatic powder coating as well as silent fans completes this cooling system. For server and network cabinets, choose the roof-mount ventilation units. If you require cooling for components in wallmount cabinets, use the rail-mount versions.