Engineered for efficiency and versatility, the Cable Overblowing Junction Box is a crucial addition for those involved in cable installation within existing ducts. It features a third branch specifically designed to connect to a GMP Cable Blowing Machine, enabling the seamless installation of new cables or innerducts into an already occupied space, provided sufficient room is available. This robust junction box is constructed with an aluminum base and lid, creating a pressurized air chamber that is rated for pressurized operation, thus supporting viscous-drag installation methods. Additionally, it includes a comprehensive collection of seals, accommodating cable diameters ranging from 9 to 20 mm, making it suitable for various applications. With its optimized design and efficient airflow capabilities, with a minimum flow acceptance of 250 cfm, this junction box is ideal for enhancing operational productivity in the realm of cable placement and installation.