The Master Flow 10 in. x 10 in. x 8 in. Insulated Register Box with Flange provides a transition from round pipe or insulated flexible duct to air register or grill. It is insulated so there is no need to wrap after installations. The insulation also serves as a noise deadener and helps control condensation. It is designed for 8 in. round ducts. The built in flange can be used with Snap on Rails to make installation easier.
Made of zinc-coated galvanized steel
Designed for 8 in. ducts
30 gauge
R-Value 6.0
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