This Master Flow 8 in. x 8 in. Duct Board Insulated Register Box - R6 is pre-insulated and ready to use for easy installation. This box features R6 fiberglass insulation that will help provide high thermal efficiency, control condensation and absorb system noise. This box can be used with multiple collar sizes for your convenience.
- Use to connect round pipe or insulated flexible duct to an air register or grill (pipe, duct, air register and grill not included)
- Insulation lining helps absorb system noise and helps control condensation
- R6 fiberglass insulation helps provide high thermal efficiency
- Pre-wrapped and ready to install for easy installation
- Seal seams with code-approved mastic, sealant or duct tape (mastic, sealant and duct tape not included)
- Versatile box works with multiple collar sizes