WOOD-LIKE 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 WL100-1-1 Pedestrian G120-1-3 Double Swing WL100-2-1 Double Swing G120-2-3 Sliding WL100-S-1 Sliding G120-S-3 Overhead WL100-O-1 Overhead G120-O-3 Fence WL100-F-1 Fence F120-F-3 Panel P120-F-25 Panel P120-F-25 PROFILE 24 X 80 PROFILE 24 X 80 Pedestrian G120-1-4 Double Swing G120-2-4 Sliding G120-S-4 Overhead G120-O-4 Fence F120-F-4 Panel P120-F-25 PROFILE 24 X 80 Pedestrian G120-1-5 Sliding G120-S-5 Double Swing G120-2-5 Overhead G120-O-5 Panel P120-F-25 Fence F120-F-5 40