MIXED Glass 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 MG190-1-1 Double Swing G190-2-1 Sliding G190-S-1 Overhead G120-O-25 Fence F120-F-25 Panel P120-F-25 Combination 24x100 and 24x40 Pedestrian G190-1-2 Double Swing G190-2-2 Sliding G190-S-2 Overhead G190-O-2 Fence F190-F-2 Panel P120-F-25 Combination 24x24 and 24x160 Pedestrian G190-1-3 Double Swing G190-2-3 Sliding G190-S-3 Overhead G190-O-3 Fence F190-F-3 Panel P120-F-25 Combination 24x220 and 24x120 18