The Simpson Strong-Tie® LT series of top-flange hangers is designed to offer superior performance for supporting I-joists. The hanger’s top-flange design simplifies placement for quick and easy installation. The stirrup laterally supports the I-joist top flange, eliminating the need for web stiffeners. LT Top-Mount Joist Hanger for 3 in. x 9-1/2 in. Engineered Wood (Pack of 750).