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15 to 30mm
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Now check that the cat flap fits through the hole. Remember,
the SureFlap logo must be inside the house. We advise that you
have 2 people for this, 1 inside the house and 1 outside the house,
to help hold the product firmly in place.
On the outside of the house, make sure the tunnel of the cat flap is
securely pushed through the hole and then slide the external frame
over it. When the external frame is in place, using a sharp pencil,
mark through the 2 holes on to the door.
Remove the external frame and the cat flap from the door then drill
the two screw holes using a 6mm (1/ 4 ") drill bit, remembering to hold
the drill horizontally. We recommend that you choose the correct
length of screw to attach the cat flap to your door at this stage.
To choose the correct length of screw, from the sets provided you
need to compare the screw lengths to the thickness of your door.
The screw needs to be between 15 to 30mm (19/ 3 2 to 1 3/ 1 6") longer
than the thickness of your door.
Put the cat flap back through the door and slide the external frame
over the tunnel. Holding the product firmly in place, use a cross
head screwdriver and the screws you selected previously, to attach
the external frame. Fasten the first screw until it is secure, but not
too tight, then do the same to the last one. Once all the screws are
secure, tighten them.
Now, insert the two screw caps into the external frame.
EN
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