I would like to have a cat door installed in my single glazed aluminium framed window panel but I am not sure how much this might cost. I am not sure if a hole is cut in the existing glass or if the whole pane of glass needs to be changed out. I have a few options for where the cat door can be placed which have different sized panes of glass so i expect if the glass has to be replaced then price will depend on size of pane.
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