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I am not an expert on fans even though I love collecting vintage electric fans. The fan you show at 2:49 has a wind ring or shroud on the front grill I think that might have a lots to do with the volume of air that fan puts out.
I am not an expert on fans even though I love collecting vintage electric fans. The fan you show at 2:49 has a wind ring or shroud on the front grill I think that might have a lots to do with the volume of air that fan puts out.