The Master Flow 8 in. x 4 in. x 5 in. Slant Top Insulated Register Box with Tabs 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 5 in. round ducts. The slanted boot makes it easier to install near a sharply pitched roof. The built in flange can be used with Snap on Rails to make installation easier.
Made of zinc-coated galvanized steel
Designed for 5 in. ducts
30 gauge
Can be installed with sheet metal screws (not included)
Insulated to help control condensation
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