1994 National F-128RM 12" box fan

[@TheKDKCollector]

If you want to skip me rambling:
Still louver
Speed 1: 4:15
Speed 2: 4:38
Speed 3: 4:58
Rotating louver
Speed 1: 5:55
Speed 2: 6:25
Speed 3: 6:47

[@Razer2875]

Yeah, even my 1983 F-306RP isn't safe from those louver hits, it is quite annoying. This is why I usually preferred ones with the synchronous motors. But overall I love these Matsushita box fans! Very nice.