We are Manufacturer Representative for RAPID Direct-Fired Air Handler 4000 Series and all other models. We service the Los Angles, Riverside and San Diego areas. We are knowledgable in make up air units, heating, cooling, building pressurization or a combination of the three, helping to improve indoor air quality. The air handlers are built with a rugged construction including welded cabinets and heavy-duty bearings. Units are available in four different configurations- Make-Up Air (MUA), Fixed Recirculation (FR), Air Management (AM), and Variable Air Volume (VAV). With a range of 5,000-150,000 CFM,