Sliding Windows ProductsuPVC WindowsSliding Windows Code 4.01: 2 panel, Fixed/Sash Code 4.02: 4 Panel, Fixed/2 x Sashes/Fixed Code 4.03: 3 Panel, Fixed/2 x Sashes Code 4.04: 6 Panel, Fixed/4 x Sashes/Fixed Code 4.05: 2 Panel, 2 x Sashes Code 4.06: 3 panel, 3 x Sashes