We have more than 50 years experience solving the air pollution control problems of a large variety of industrial processes, including furnaces, boilers, incinerators, kilns, and dryers. During that time, we have helped customers comply with clean air regulations in the glass, steel, paper, wood, semiconductor, asphalt, and many other industries. With our extensive line of air pollution control equipment, we can solve problems involving different types and combinations of particulates, acid gases, and volatile organic compound (VOC) emissions. Our product line includes dry and wet electrostatic precipitators, acid gas scrubbers, fabric filters, and regenerative thermal oxidizers.

We pioneered the manufacture and use of spiral duct and fittings for heating, ventilating, and air conditioning (HVAC) in the USA. Our extensive lines of duct system products are engineered for performance and economy and continue to set the standard for the industry. We are the country's leading manufacturer of commercial and industrial sheet metal ductwork supported by our nationwide Duct Express fulfillment service and network of sales engineering offices and manufacturing plants.

Our pressure processing equipment is designed to be safe, dependable, and economical. We engineer and build autoclaves for processing materials in many industries, including aerospace, electronics, rubber, and glass. Our vacuum dryers are used extensively in the chemical and pharmaceutical industries. We offer complete maintenance and repair service to keep autoclaves and vacuum dryers performing as designed.

We provide noise control solutions for a broad range of industrial and HVAC applications. We accomplish that by offering a diversified line of acoustical products such as panel systems and enclosures, silencers, curtain systems, barriers, baffles, and an array of noise control materials such as foams, tiles, and acoustical linings.

We offer the leading line of sealants and adhesives for residential, commercial, and industrial HVAC and ductwork. Products are available in both solvent- and water-based forms for many different needs and uses.