• Ductmate Industries

• Ducts, Inc.

• Duro Dyne Canada

• Duro Dyne Corp.

• Dynasonics Systems

• E-A-R Specialty Composites

• E. Vernon Hill

• EWC Controls

• Edelstein Diversified Co. Ltd.

• Ellis & Watts

• Elmdor/Stoneman

• Environmental Technologies

• FOF INC.

• Fab-Tech Incorporated

• Fiber-Tech Engineering, Inc.

• Flexible Valve Corporation

• Flexmaster USA

• GAF

• Gantec Equipment Co.

• General Plastics Manufacturing Company

• General Rubber Corp.

• Goodway Technologies Corporation

• Grand Entrance Gates, Ltd.

• Greenheck

• Grill Works

• HEMCO corp.