Place Ladder support along gutter at desired location. Use a pencil to trace inside diameter of both screw holes. Set the support out of the way and drill or punch both holes making sure screws will pass through freely.
Place both ferrules into position with the holes at one end and the back of the gutter at the other end. If you have a 4 inch gutter, you will need to trim 1 inch off each ferrule. Make cuts as square as possible.
Realign support to holes in the gutter and insert screws. The screws are self threading, so it is recommended that you use a drill and a #3 Phillips bit. Install screw firmly without overtightening. Repeat, using the other screw. If you do no have a drill, firmly tap the screw until the threads bite into the wood. You can then tighten the screw with a #3 Phillips screw driver.
Install the vinyl caps over the ladder stops.
The Ladder-Dok system in not a safety device and is not intended to secure a ladder or prevent slippage or falls.
Follow all ladder manufacturers directions and cautions regarding ladder set-up and use at all times.
Avoid installing the support at or near electrical lines, as metal conducts electricty