PowerPoint Weld Pins are used to fasten insulation to the inside of sheet metal air ducts. These fasteners are usually applied when the duct work is being fabricated. The fasteners have been specifically designed to work with all currently available duct liners and standard resistance welding type application equipment.
A Gripnail is a unique mechanical fastener used to attach insulation to sheet metal. It was specifically designed to fasten acoustical duct liner to the inside of heating, ventilation and air condition ductwork. This operation generally takes place when the ductwork is being manufactured.