Panel Edge Clips, more often known as H-Clips (because they look like the letter ‘H’ when looked at from the side), are small building components having a large importance.  They transfer weight across two panels of roof sheathing and are typically centered between trusses.  They give strength to the weaker panel edge.  H-clips also serve another purpose.  Sheathing panels require a small gap between sheets to accommodate expansion due to heat and moisture.  The use of these clips ensures proper sheet separation.