Cat flap in a metal skinned door with recessed panels

[chainsawuser]

Hi
I need to fit a cat flap into a back door.
The door is original to a house built in 2002.
The door has a metal skin on the inside and outside. The bottom half of the door has 2 side by side recessed mouldings. See (hopefully) picture:

Untitled

• chainsawuser
• 11 Nov 2013
• 1

I want to fir the cat flap in the centre of the door as low down as possible. The only problem I see is that the hole for the cat flap will overlap with the corners of the 2 recessed panels.
I really want to make a neat job of this and am concerned how I go about sealing the cat flap to the door in the area of the recessed panels.

Any suggestions on how I should go about this would be much appreciated.

Thanks in advance.....

 

[foxhole]

Better to cut just one side of door into the recess, flap should fit leaving only top egde to make good with some sealant.