12. From the inside of the house put the tunnel extenders and Pet Door into the hole
through the wall until the Pet Door is flush against the wall. At this point you can tell
whether the holes are large enough or need adjusting. If no adjustment is necessary
you are at the point where you can make the holes for screwing the Pet Door to the
wall.
13. The screw holes for mounting the Pet Door to the wall are underneath the front panel.
To remove the front panel you need to remove the button cover and the two screw caps
at the bottom of the Pet Door. Unscrew the four screws and remove the front panel.
See figure 25.
14. There are four screw mounting positions for the Pet Door, mark on the wall at the four
positions using a pencil or pen (do not drill through the hole as this will get debris and
dirt in the locking mechanism of the Pet Door). See figure 26.
15. Remove the Pet Door and tunnel extenders from the hole in the wall and away from the
area while you drill the four holes in the wall.
16. Replace the Pet Door and tunnel extenders in the hole and use any of the screws that
came with the Pet Door to fix the product to the wall. We recommend screwing to the
wall by hand so you do not overtighten the screws. See figure 27.
17. Replace the front panel using the four screws, push in the screw caps and replace the
button cover.
18. On the outside of the house you will have the tunnel extenders exiting the wall. Place
the external frame over the extender and using a pencil or pen mark the location for the
four screws.
19. Remove the frame and drill the four holes for the screws.
20. Replace the external frame and screw in position. Insert the screw caps.
21. Use a silcone sealant around the joint between the tunnel extenders and the external
frame and around the top and two sides of the frame where it meets the wall. See
figure 28.
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