Dutch Double Truss Clip, For Alignment Control Between A Roof Truss & Nonbearing Walls, Connects From The Top Plate To The Truss, Install Slot Nails In The Middle Of The Slot, The 1-1/2" Slot Permits Vertical Truss Chord Movement When Loads Are Applied, Made With 18 Gauge Galvanized Steel, Install With Four 8D Nails In Base & Two 8D Nails In Slot.