Fuliko HVAC Straight Through Ceiling Register Box, 6" 6" 4" Galvanized Steel Ductwork Box Vent Connector for Outlet Diffuser HVAC, Fits 4" Round D

Specifications: Color: Silver Tone; Material: Galvanized Steel; Inner dimensions: 152.4 152.4 mm / 6 6 inches, with 6x6 inch ceiling diffusers. Duct Collar Outer Diameter: 101.6 mm / 4 inches; Duct Collar Length: 60 mm / 0.24 inches; Thickness: 0.6 mm / 0.02 inches; Included: 1 Ceiling Register Box Advantage: Made of galvanized iron, it is not only corrosion-resistant and but also capable of temperatures and pressure, ensuring reliable of the ventilation . It can be in harsh environments for long periods, without aging. With smooth surface and good . The square and round shape design allows the air duct to better adapt to various complex ducting requirements, providing more uniform and efficient ventilation. Application: The sheet metal register duct ceiling outlet box is intended for duct transition between round pipe and square ceiling diffuser, appropriate for air ventilation in buildings, spaces, and industrial workplaces. Instruction: Use to the round duct to the square diffuser or register vent. The box is designed with crimped for installation and connection. Note: Pay attention to the size before purchasing. You can replace the filter in the pipeline filter box yourself as needed.