Start Collar With Crimp
Ventilation and HVAC Duct Start Collar, 12″ Round Snap Together Sheet Metal Plenum Collar Sleeve with Flange Metal collars to connect the flexible hoses.
Plenum Collar is made of steel sheet.belong to Gauge duct fitting.
Connect the plenum box with the pipes.
Available in the dimensions below: 100,125,150,160,200,250,300,350, 400mm and more.
Use to start runs of flexible or rigid HVAC ducting
Easy to install
Retaining ridge around inlet neck to ensure snug fit to flexible duct
Bend every other tab into duct connection, let the rest go outside the duct connection.