4000806 – REDUCER

A duct reducer transitions between two different round duct sizes in your supply or return air system. Use one when you need to connect a 8″ duct run to a 6″ branch, or when stepping down from a trunk line to a smaller run. Galvanized steel construction holds up in attics, crawlspaces, and walls.

Specs: 8″ to 6″ round duct reducer, galvanized steel, crimped on small end for slip-fit connection

Replaces: 4000806, SHMRNC26XU

Fits: Standard 8″ to 6″ round ductwork. Universal fit — works with all HVAC brands and systems.

In stock at Open To Public HVAC Parts in Dallas. We test parts at the counter before you buy. Call or text (214) 340-9421.

Cross-reference numbers

This part replaces the following OEM and aftermarket numbers:

• 4000806
• ELKHARTCOPPER
• ELKHARTCOPPERFITTINGEQUIVALENT
• MUELLERCOPPER
• MUELLERCOPPERFITTINGEQUIVALENT
• SHMRNC26XU
• SMITH-COOPERBRASS
• SMITH-COOPERBRASSFITTINGEQUIVALENT

Not sure if your number matches? Call (214) 340-9421 or bring the old part in — bench-testing is free.