Aristocrat System extra heavy duty concealed standards have 1/2" slots, 1" in on center for 1" adjustments. These give an attractive, distinguished look to any store. Installation is simple, fast and economical. Once drywall, paneling or mirror is installed, only a narrow vertical slot is visible. When to use: The Aristocrat System is recommended for the most severe loads and heavy traffic conditions. Standards over 6' long will be shipped VIA common carrier. Freight will be quoted separately. You will be notified of the freight amount.