print i w/e you like , transparent for the flap preferably. 6 X ½ inch s/s countersunk screws, ½ meter of 5mm flyscreen spline and a 3 x 10 magnet for the bottom of the flap and a piece of steel or another magnet in the bottom of the cover will keep it shut and allow your pet ot enter exit as they like
The author hasn't provided the model origin yet.