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Self-balancing air inlet

1. Specification: Corresponding opening dimensions of a single inlet are 800mm long * 1120mm high and 1000mm long * 1120mm high

2. Material: Outer frame: PVC, plug: ABS, blade: PC transparent sun board, iron counterweight: hot dip galvanized, fixing parts: 304 stainless steel;

3. Structure: four-layer fan blades, negative pressure adjustment;

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