Simpson strong-tie connectors make projects easier to build while making them stronger and safer. They are engineered and tested to perform and are manufactured to the highest quality standards. Whether working on a home project or building a structure to comply with building codes, go with the choice of engineers and contractors, go with genuine Simpson strong-tie connectors. The standard lu hanger provides flexibility of joist to header installation. Install with 10D common nails or #9 x 1-1/2 in. Strong-drive sd screws in the header and 10D x 1-1/2 in. Nails in the joist.