SPIRAmir^®, a patented self-sealing spiral ductwork system, is the latest innovation in HVAC.

SPIRAmir^® is the most unique way to join round duct and fittings without the use of sealant or duct tape.

SPIRAmir^® Self-Sealing Spiral Duct System uses O-Ring gasket. This gasket is not attached to the fitting. It rotates easily between two grooves placed on the SPIRAmir^® fittings.