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PC fan ventilation, 3d printed duct adapters. 200mm fan on top with 8" duct adapter, 120mm fan on side with 6" duct adapter. super efficient, about 6 watts including PS losses. will
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Amazon.com: BITMAIN Antminer T9 S1 S3 S5 S7 S9 A3 D3 L3 V9 120mm High Temp Fan Duct 4 INCH USA Made (1 PCS) : Electronics
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