CAP130 Horizontal Flow Wall Modules provide clean horizontal laminar airflow. Units can be used separately or in groups to form a wall for a cleanroom or tunnel. There are two styles to meet a variety of applications:CAP132 – Units can be placed against walls because filter changes and maintenance are accomplished from the front.CAP133 – HEPA filters are serviced from the front, but other maintenance (blowers, motors and prefilters) is done from the rear of the unit.