Joist hangers are designed to provide support underneath the joist, rafter or beam to provide a strong a connection. Simpson Strong-Tie offers a diverse line of hangers to handle almost any application with top flange, concealed flange and field-skewable and slopeable options. HGUS hangers are designed for applications where higher load values are needed. HGUS Galvanized Face-Mount Joist Hanger for 4×6 (Pack of 12).