Hartland does a good job explaining Whisper A/C. Their version is "Whisper Quiet", but same idea.
http://www.heartlandrvs.com/landmark...quiet-dual-a/c
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Pull Toy
Steve & Jan, Ava & Emma (Mini Schnauzers):
2016 F350 Lariat 4X4 Powerstroke CC/SB "PULLTOY V"
2013 Alpine 3535RE "MAGIC CARPET IV"
Proud Navy Vet! 
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