This Imperial Insulated Register Box is used to create an in-line transition from 4-in round pipe or insulated flexible duct to a 4-in x 8-in register or grille. Fiberglass insulation inside the box helps to reduce noise and control condensation. Since the register box is pre-insulated, it comes ready to install without the need to wrap. Installation can be completed with sheet metal screws (sold separately) for a secure fit. This register box is made from 30-gauge galvanized steel for rust resistance and long-lasting durability. Its design is suitable for use in most heating, venting and air conditioning applications.
Connects to a 4-inch pipe, connector or insulated flexible duct
Fiberglass insulation inside the box helps to reduce noise and control condensation
Pre-wrapped for easy installation
Constructed from 30-gauge galvanized steel for durability and rust resistance
Installs with sheet metal screws (not included)
Suitable for use in most HVAC applications
Fiberglass insulation R-value: 4.2