Kerfing and Angle Tools are commonly used in HVAC. Used for duct angling and cutting.

Angle tools give angle to a cut and dimensions, over ductboards.

Kerfing tools are commonly used in woodworking and AC work. “Kerf” is the term used to describe the thickness of a cut. This cut is usually signified on wood. Although in the field of HVAC, we have a kerfing tool for ductboards, allowing for easier cuts on the fiberglass.