FM 500 Filter Modules simplify design and construction of Horizontal Flow Class 100 (ISO 5) areas. A self-contained unit with HEPA filters, blowers, motors and prefilters. May be aligned to form a filter wall to any specifications. Modules fabricated in 3 ft., 4 ft., 5 ft., and 6 ft., widths. Units can be set up side by side. 3/4-inch novaply, white high-pressure plastic laminate on exterior. Interior surfaces sealed to prevent shedding particulates.