what is meant by ordering the correct number of flush-fit end panel to finish sides of cabinet depending on your configuration?

Linen Cabinets are shipped in two pieces with unfinished sides. One upper Flush-Fit End Panel will be automatically shipped with the Linen Cabinet to cover one of the exposed upper sides. If the Linen Cabinet is next to a vanity, drawer bank or other cabinets and or a wall then additional Flush-Fit End Panels wouldn't be needed. If this isn't the case and and it is used free standing with nothing next to it, then an additional Flush-Fit End Panel Kit purchase would be required. Flush-Fit End Panels only are needed for exposed sides of the Linen cabinet.