Simpson 4 x 10 Concealed Flange Joist Hanger Skewed Left ZMAX HSULC410ZModel No. HSULC410Z Skew L R. Skewed Left Gauge. 14 Joist size. 4 X 10 Height (in.) 8 1 2 Coating Material. ZMAX The HSURC and HSULC are 45 skewed hangers designed to support 2x and 4x members in wood construction. These heavy U shaped hangers feature concealed header flanges providing cleaner visible lines in exposed conditions. These are identical except that they are skewed 45 to the right (HSURC) and the left (HSULC), respectively. Key Features A2