The Iowa Precision Colatch HVAC Duct Collar Attaching Machines — field-proven and multi-functional — form a bead for the collaring operation in producing boots and other furnace fittings. The machines can expand the boot or take-off and also groove the collar (as well as the boot or take-off). It will also stabilize the collar to the boot or take-off. The three-legged design facilitates precision leveling and there are three (3) different models for 4" through 20" diameters (see Specifications tab below for model details)
