If you install, manufacture or sell supplies for HVAC systems, we are your source. Flexible duct, specialty sheet metal fittings, venting products from B-vent to commercial stainless products, cutting edge polypropylene venting, and solid fuel venting products. All types of residential and commercial duct hardware including manual and motorized dampers. A complete selection of residential and commercial grills, registers, and diffusers. Duct sealing tapes, mastics, and adhesives for every residential or commercial application. Linesets, tube insulation, and innovative alternatives to copper refrigerant lines. Sheet metal screws, fasteners, specialty sheet metal hand tools for HVAC rough in projects and specialty service hand tools. Specialty power tool attachments for HVAC applications.