diff --git a/gramps/gui/configure.py b/gramps/gui/configure.py
index ed3dfb126..e93daa91e 100644
--- a/gramps/gui/configure.py
+++ b/gramps/gui/configure.py
@@ -104,6 +104,7 @@ class DisplayNameEditor(ManagedWindow):
             Gtk.Dialog(_('Display Name Editor'),
                        buttons=(_('_Close'), Gtk.ResponseType.CLOSE)),
             None, _('Display Name Editor'), None)
+        self.setup_configs('interface.displaynameeditor', 820, 550)
         grid = self.dialog._build_custom_name_ui()
         label = Gtk.Label(label=_("""The following keywords are replaced with the appropriate name parts:<tt>
   <b>Given</b>   - given name (first name)     <b>Surname</b>  - surnames (with prefix and connectors)
@@ -126,7 +127,6 @@ UPPERCASE keyword forces uppercase. Extra parentheses, commas are removed. Other
         label.set_use_markup(True)
         self.window.vbox.pack_start(label, False, True, 0)
         self.window.vbox.pack_start(grid, True, True, 0)
-        self.window.set_default_size(600, 550)
         self.window.connect('response', self.close)
         self.show()
     def close(self, *obj):
@@ -178,6 +178,7 @@ class ConfigureDialog(ManagedWindow):
             Gtk.Dialog(dialogtitle,
                        buttons=(_('_Close'), Gtk.ResponseType.CLOSE)),
                        None, dialogtitle, None)
+        self.setup_configs('interface.configuredialog', 920, 450)
         self.panel = Gtk.Notebook()
         self.panel.set_scrollable(True)
         self.window.vbox.pack_start(self.panel, True, True, 0)
diff --git a/gramps/gui/dbman.py b/gramps/gui/dbman.py
index 8d03be2e7..6e52c11e7 100644
--- a/gramps/gui/dbman.py
+++ b/gramps/gui/dbman.py
@@ -116,11 +116,10 @@ class Information(ManagedWindow):
         super().__init__(uistate, [], self)
         self.window = Gtk.Dialog()
         self.set_window(self.window, None, _("Database Information"))
+        self.setup_configs('interface.information', 600, 400)
         self.window.set_modal(True)
         self.ok = self.window.add_button(_('_OK'), Gtk.ResponseType.OK)
         self.ok.connect('clicked', self.on_ok_clicked)
-        self.window.set_position(Gtk.WindowPosition.CENTER)
-        self.window.set_default_size(600, 400)
         s = Gtk.ScrolledWindow()
         titles = [
             (_('Setting'), 0, 150),
diff --git a/gramps/gui/glade/plugins.glade b/gramps/gui/glade/plugins.glade
index 95749ee0e..40b963d7b 100644
--- a/gramps/gui/glade/plugins.glade
+++ b/gramps/gui/glade/plugins.glade
@@ -5,8 +5,6 @@
   <object class="GtkWindow" id="report">
     <property name="visible">True</property>
     <property name="can_focus">False</property>
-    <property name="default_width">600</property>
-    <property name="default_height">400</property>
     <signal name="delete-event" handler="on_delete_event" swapped="no"/>
     <child>
       <object class="GtkBox" id="vbox38">
diff --git a/gramps/gui/plug/_dialogs.py b/gramps/gui/plug/_dialogs.py
index 9a8a2ba29..5a32ca7ab 100644
--- a/gramps/gui/plug/_dialogs.py
+++ b/gramps/gui/plug/_dialogs.py
@@ -101,6 +101,12 @@ class PluginDialog(ManagedWindow):
         self.title = self.dialog.get_object("title")
 
         self.set_window(window, self.title, msg)
+        if content == _REPORTS:
+            self.setup_configs('interface.reportplugindialog', 600, 400)
+        elif content == _TOOLS:
+            self.setup_configs('interface.toolplugindialog', 600, 400)
+        else:
+            raise ValueError("PluginDialog selection must be a report or tool")
 
         self.store = Gtk.TreeStore(str)
         self.selection = self.tree.get_selection()
diff --git a/gramps/gui/plug/_windows.py b/gramps/gui/plug/_windows.py
index ef27e72bb..22b4d269b 100644
--- a/gramps/gui/plug/_windows.py
+++ b/gramps/gui/plug/_windows.py
@@ -101,7 +101,7 @@ class PluginStatus(ManagedWindow):
                                    Gtk.DialogFlags.DESTROY_WITH_PARENT,
                                    (_('_Close'), Gtk.ResponseType.CLOSE)),
                         None, self.title)
-        self.window.set_size_request(750, 400)
+        self.setup_configs('interface.pluginstatus', 750, 400)
         self.window.connect('response', self.close)
 
         notebook = Gtk.Notebook()
@@ -681,7 +681,7 @@ class PluginTrace(ManagedWindow):
                                    Gtk.DialogFlags.DESTROY_WITH_PARENT,
                                    (_('_Close'), Gtk.ResponseType.CLOSE)),
                         None, title)
-        self.window.set_size_request(600, 400)
+        self.setup_configs('interface.plugintrace', 600, 400)
         self.window.connect('response', self.close)
 
         scrolled_window = Gtk.ScrolledWindow()
diff --git a/gramps/gui/tipofday.py b/gramps/gui/tipofday.py
index f88f0ee29..26b75db83 100644
--- a/gramps/gui/tipofday.py
+++ b/gramps/gui/tipofday.py
@@ -66,6 +66,7 @@ class TipOfDay(ManagedWindow):
                         xml.get_object("title"),
                         _("Tip of the Day"),
                         _("Tip of the Day"))
+        self.setup_configs('interface.tipofday', 550, 350)
 
         self.tip = xml.get_object("tip")
         self.use = xml.get_object('usetips')
diff --git a/gramps/gui/undohistory.py b/gramps/gui/undohistory.py
index 645c36ff7..dd38c0d7d 100644
--- a/gramps/gui/undohistory.py
+++ b/gramps/gui/undohistory.py
@@ -91,7 +91,7 @@ class UndoHistory(ManagedWindow):
                                               Gtk.ResponseType.CLOSE)
 
         self.set_window(window, None, self.title)
-        self.window.set_size_request(400, 200)
+        self.setup_configs('interface.undohistory', 400, 200)
         self.window.connect('response', self._response)
 
         scrolled_window = Gtk.ScrolledWindow()