Transition from a flat surface like a lined or unlined plenum to round pipe or insulated flexible duct.
- Made of galvanized steel for strength and durability
- Helps transition from lined or duct board plenums to round pipe or insulated flexible duct
- Can be used with lined or unlined metal plenums, has a snap-together design and two inches between bead and flange allow space for securing insulated flexible duct
- This section includes round and rectangular starting collars and take-offs
