Infinitely expandable five-way multi-port air manifold, compatible with 4-inch fans and 8cm aluminum foil ducts (including reducer fittings)

This is an infinitely expandable and modular multi-port exhaust air collector, defaulting to a five-way configuration with four inlets and one outlet. The typical power setup is 2.5kW, and four devices are already quite sufficient. The middle section is modular and infinitely expandable, offering good concealment. For the air outlet, the fan can be directly inserted into the opening. When used with a baffle, simply drill round holes for direct exhaust to achieve a negative pressure effect.