This listing is for a new 7 inch collar for 7" flex duct that fits on round pipe. 

We have been it the heating and cooling business for over 25 years.

We also have a larger selection of other mobile home heating and cooling parts for several different brands including Coleman, Evcon, Intertherm, Miller, Goodman, Nordyne, ect. . 

Please email me with any questions you might have.