Master Flow Ductboard Insulated Register Boxes connect round pipe or insulated flexible duct to an air register or grill. They arrive ready-to-install, conveniently pre-wrapped with R6 fiberglass insulation!
- Pre-insulated - no need to wrap
- Insulation lining absorbs system noise and helps control condensation
- R6 insulating value results in higher thermal efficiency for ductboard products
- Versitle - one size box works with multiple size collars
- Add your collar of choice
- Always seal seams with code approved mastic or sealant (or duct tape)
- Always seal seams with code-approved mastic, sealant or duct tape