The item refers to axial fans and gives an idea of the size of the device. The larger the size, the more airflow the fan can produce at lower RPM (and therefore less noise). It is worth noting that sometimes this indicator is indicated for the blades, and sometimes it is fully indicated for the entire grill body. However, this already gives an idea about the size and capabilities of the device.
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Cross base. The most common type of base for floor-standing fans, it provides sufficient stability while maintaining a lightweight design. Also, fans with a cross base are usually cheaper than others. Of the advantages, a collapsible design can be noted, which creates additional convenience for storage or transportation.
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Disk base. This type of base is massive, usually, such discs at the base can weigh 3-5 kg, depending on the fan model. They are made from various materials. Usually, the disk comes as a separate part of the structure, on which a decorative overlay is put on top. It is believed that such a base provides better stability than many cross bases.
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Tripod. The least common type of base, in which, apart from the aesthetic component, there is nothing else. In terms of structure, such models are too voluminous, and in terms of reliability, they are at the level of models with a disk.
