The Master Flow 10 in. x 10 in. Duct Board Insulated Register Box - R6 is pre-wrapped with R6 fiberglass insulation to help provide high thermal efficiency while you use the box to connect round pipe or insulated flexible duct to a grill or air register (pipe, duct, grill and air register not included). This versatile box is compatible 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