- 4-Inch x 3-Inch Galvanized Sheet Metal three piece reducers
- Used to reduce the diameter of a HVAC supply, return or exhaust round duct
- Seal joints with approved duct mastic sealants
- Insulate Ductwork for improved energy efficiency and comfort
- Consult your local building codes for approved installation practices
- 4-Inch x 3-Inch Galvanized Sheet Metal three piece reducers
- Used to reduce the diameter of a HVAC supply, return or exhaust round duct
- Seal joints with approved duct mastic sealants
- Insulate Ductwork for improved energy efficiency and comfort
- Consult your local building codes for approved installation practices