These gutter hangers are made for free hanging gutter applications where there isn't a flat fascia board to mount the gutter. The strap is factory riveted to the hanger and is ready to be nailed to the roof deck.
The T-Bar gutter hanger comes with a clip to secure over the back edge of the gutter. Simply clip in the front bead like a normal hidden gutter hanger, slip the other end over the back of the gutter, and put a screw through the hanger and gutter to hold everything together. Recommended Spacing is 18"- 24", depending on snow load, and average rainfall per year.