Touch UI dialog | Set height and width

Here is the answer to your question - you can control via code:

(function ($, $document) {

    "use strict";

    function adjustLayoutHeight(){

        //with only two selects, the second select drop down is not visible when expanded, so adjust the layout height

        //fixedcolumns i guess doesn't support property height, so fallback to jquery

        //http://docs.adobe.com/docs/en/aem/6-0/develop/ref/granite-ui/api/jcr_root/libs/granite/ui/components/foundation/layouts/fixedcolumns/index.html

        $(".coral-FixedColumn-column").css("height", "18rem");

    }

    $document.on("dialog-ready", function() {

        adjustLayoutHeight();

    });

})($, $(document));