Dog and Cat Door (for Small Dogs) For Screen Doors Only 35cm x 30cm x 1.2cm ・For resin net screen doors. Cannot be used with metal net screen doors. ・There will be an 8mm width from the indoor side of the screen door, so please check for any interference. ・If you have been using the screen door for a long time, the net may have deteriorated, so please replace the net before installing.