Sunset Disposable CPAP Filter, 2-3/4" x 7/8". For HC230 and HC600 Series. Sunset Disposable CPAP Filter is a Disposable White Fine Filters for IntelliPAP Standard and AutoAdjust CPAP Machines (6 Pack) includes six disposable fine filters for the IntelliPAP line of machines. Place either side facing flat against the air filter reservoir.