What fans are used in the Windtunnel Assembly of the Multimatic 255?
The Windtunnel Assembly uses two Muffin fans rated at 24 VDC, 8000 RPM, and 175 CFM with 3.248 mounting holes (Part No. 278710, designated FM1 and FM2). They are housed in a plastic front fan holder (Part No. 277505). (Page 10)
From the official Miller Multimatic 255 Multi-Process Welder manual, page 10
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