The 230-TC reducer coupling is used for joining two differently sized pieces of SpeediChannel together. It can be used for combining a 3" cover to a 4" cover or a 4" line set cover to a 6" cover. Each coupling is individually packed, and is furnished complete with stainless steel screws.
The Reducer Coupling is available in 3" x 4" (230-TC34) and 4" x 6" (230-TC46) sizes.