Integrated Flange Design Allows secure attachment to flat surfaces such as duct board plenums, lined plenums, or metal plenums.Pre-Cut Installation Tabs Evenly spaced tabs around the collar edge can be bent inward or outward during installation, ensuring a firm mechanical lock to the plenum opening.Reinforced Bead Around Neck The rolled bead strengthens the collar body and provides a reliable gripping point for flexible or insulated ducts.Optimized Connection Length Adequate spacing between bead and flange allows proper fastening of insulated flexible ducts using clamps or straps.Galvanized Steel Construction Ensures durability, dimensional stability, and resistance to corrosion under HVAC operating conditions.
