220V 40W furnace fan air blower small centrifugal fan centrifugal fan boiler fan fan heat sink 1. Metal shell Precision stamping, high temperature paint treatment, no rust, beautiful appearance 2. Pure copper motor High-quality pure copper motor, closed bearing cover, high dust-proof, class H insulation, high temperature resistance, quiet, long service life, and can be connected at work. 3. Multi-blade impeller The impeller has a multi-wing structure, and the mold is stamped and formed in one piece. After debugging the static and dynamic balance, it ensures smooth operation, low noise and large air volume.

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