The Simpson Strong-Tie® H1.81Z hurricane tie is designed for use with 1-3/4 in. LVL roof rafters to provide a stronger connection to the top plate of the wall. It’s ideal for connections when there are higher-load demands on the structure, like a heavy snow load, and provides lateral resistance in a seismic event. The 1-3/4 in. wide H1.81Z connector is the first hurricane tie to be specifically sized for engineered wood. The H1.81Z installs with half the nails that are needed for two single-sided twist straps and offers a higher lateral allowable load, making it a cost-effective and higher-performing solution to tie down an LVL roof. H1.81 18-Gauge ZMAX® Galvanized Hurricane Tie (Pack of 2400).