HH4 4x Header Hanger, For Fast, Accurate, Installation Of Door & Window Headers & Other Cross Member Details, Designed To Help Resist Download Forces, Eliminates The Need For Studs Below The Header, Quicker & Easier To Use Than Traditional Framing Methods, Made With 16 Gauge Galvanized Steel, Install With Nine 16D Nails Into Stud & Four 16D Nails Into Header.