HI-TECH FRAMELESS SERIES About SKU - (Stock Keeping Unit) SKUs are unique identifying codes for each of the items we offer. We created our SKUs based on various characteristics of our products. We use them as a system to differentiate and categorize our products efficiently. You can request a specific model by referring to its SKU. Pedestrian G140-1-1 Double Swing G140-2-1 Sliding G140-S-1 Overhead G140-O-1 Fence G140-F-1 Panel G120-F-25 Horizontal Bars Pedestrian G140-1-1V Double Swing G140-2-1V Sliding G140-S-1V Overhead G140-O-1V Fence G140-F-1V Panel G120-1-25 Vertical Bars Currently only available for motorized gates and for fences which do not require locks. Not for pedestrian gates. 48