Square wall axial flow fans,简称DFBZ series, are equipped with low-noise specialized motors for direct drive; the entire unit is constructed in a square shape, featuring an aesthetically pleasing design and easy installation through pre-drilled square holes in walls; the outlet is fitted with self-hanging louvers to prevent rainwater and natural wind from reversing into the room; they offer distinct advantages such as sturdy installation, low vibration, low noise, and stable operation, making them widely applicable for wall-mounted exhaust ventilation in industrial and mining enterprises, residential buildings, stadiums, animal husbandry, and various other venues. The DFBZ-I model uses an internal rotor motor direct drive structure, while the DFBZ-II model employs an internal rotor motor.Belt DriveStructural form, DFBZ—III type is adoptedExternal rotor motorDirect drive transmission structure. Available in anti-corrosion and explosion-proof models upon customer request.