Artesian Spas Air Control Cap 2.5"
2004-2007 Artesian Magic Series
2004-2005 Artesian Platinum Series
2005 Artesian Gold Series
2005 Artesian Island Series
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Artesian® Spas, Island Spas, South Seas, Platinum Elite2.75" Air Control Knob With 1" Inch PlumbingArtesian air control in gray. 1" inch plumbing requires 1-3/4" hole size