The single sided shelving units are generally placed up against an existing wall. The reason they are not considered an island unit is the wall suports the back side of the fixture to help prevent it from over turning.
The Wall Gondola Shelving unit is assempled with the same components as the Island or Double Sided Gondola. The difference with the single sided Half or Wall Shelving Gondola is merchandsie or products can only be displayed on one side of the display fixture.
The Sinle Sided Shelving unit is your best bet as a Gondoa Shelving End Cap as the fixture can easily be slid up against the end of an existing aisle of Gondola Shelving.
You will typically see a Wall Gondola Shelving behind the wall of a Liquor Store with astronomical heights as high as 13 feet or even higher.
Liquor Shelves attached to Gndola Shelving can hold up to 500 pounds or evenly distributed weight.
Is best configured with a single sided section that can be simpley placed at the end of a aisle of Gondola Shelving. The reason the single sided half gondola is your best bet for an end cap is it is well know as a sturdy store fixture.