You can associate the sizes written measures the height X width so I can order also the kennel mo cat is resin.

As for the measures of the door pull-down transparent PVC for kennel Ezia model, are shown in the respective data sheet downloadable.
You can download the dimensions of each size by clicking on "download" next to the text "Measures and Dimensions" that is in the table located below the description text of the article.
In any case, the report below the direct link to the article:
http://www.farmaker.net/Porta-tendina-per-cuccia-con-PVC-trasparente-EZIA
and the corresponding data sheet:
http://www.farmaker.net/WebRoot/ce_it/Shops/990122324/55BF/6F81/7B26/E10E/9B8B/C0A8/190E/D09A/00142-misure-porta-tendina-per-cuccia-ezia-farmaker.pdf
As regards the installation, the door has a wood structure and is generally used on houses in this material, with regard to the installation of a resin kennel, you will have to use an appropriate fixing system.