Speedi-Products 4 in. Galvanized Sheet Metal Round Back Draft Damper. Ideal for use with intake or exhaust duct systems. Can be used for Remodeling, Do it yourself and New Residential projects.
- Ideal for use with intake or exhaust duct systems
- Seal joints with approved duct mastic sealants
- Insulate ductwork for improved energy efficiency and comfort
- Consult your local building codes for approved installation practices