Effox-Flextor-Mader (EFM) is the international leader in the design and manufacture of dampers and expansion joints for use in flue gas and process air handling systems.  Our team includes a skilled staff of engineers, designers, fabricators, and field service personnel to ensure the highest quality engineered-to-order products.

Around the globe, our dampers and expansion joints are being used in systems that clean polluting emissions and contribute to reducing greenhouse gases. We are known for our commitment to quality. We offer engineered-to-order solutions that meet the most demanding specifications for the world’s most stringent customers.