Classification Information
Emission control systems comprised primarily of indirect contact heat exchangers and ozone-based control devices using gas and vapor condensing to control and treat emissions; Fireplace inserts in the nature of heat exchangers; Fireplace inserts, namely, heat exchangers; Heat exchangers for chemical processing; Heat exchangers not being parts of machines; Heat exchangers, other than parts of machines; Heating installations; Hybrid water heater; Portable electric warm air dryer; Portable stoves; Purification installations for sewage; Sewage purification apparatus; Thermostatic valves as parts of heating installations; Toilet accessories, namely, handles that are affixed to toilet seats; Wood burning stoves
Environmental Control Apparatus