This Imperial Insulated Register Box is used to create an in-line transition from 6-in round pipe or insulated flexible duct to a 6-in x 10-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 6-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 Sub Type: Straight register Type: Duct boot Depth (Inches): 10 Diameter End 1 (Inches): 6 Diameter End 2 (Inches): 0 Diameter End 3 (Inches): 0 Length (Inches): 8 Width (Inches): 6 Crimped: No Damper Included: No Flange Included: No Gauge: 30 Insulated: No Material: Galvanized steel Package Quantity: 1 Shape: Rectangle Warranty: 1-year limited CA Residents: Prop 65 Warning(s): No Safety Listing: Not safety listed UNSPSC: 40141900