... external setting,2000*520mm(L*W),surface is paintedRoom BodyBack side with 50mm Eps wall panels, the other 3 sides with ... ,5.0mm clear tempered glass.Generator settingExhaust air from rear side, galvanized steel molding frame, white coated steel cover.Intake ... model YDW-4.5s, air capacity:15500m3/h,electric damper for exhaust air.Filtering systemPre-filter, high efficiency filter, exhaust fiberglass ...