diff --git a/BFR/MainWindow.xaml b/BFR/MainWindow.xaml
index 5a28ae5..bd9c615 100644
--- a/BFR/MainWindow.xaml
+++ b/BFR/MainWindow.xaml
@@ -5,12 +5,28 @@
         mc:Ignorable="d" MinWidth="720" MinHeight="480"
         x:Class="BFR.MainWindow"
         Title="BFR">
-  <Grid RowDefinitions="auto,auto,*" ColumnDefinitions="*,*,*">
-    <!-- Directory Selection and TODO:Filter -->
-    <Grid Grid.ColumnSpan="3" ColumnDefinitions="*,auto">
-      <TextBox Grid.Column="0" IsEnabled="False" Text="C:/Example.File.png"/>
-      <Button  Grid.Column="1" Content=" ... "/>
-    </Grid>
+  <Grid RowDefinitions="auto,auto,*" ColumnDefinitions="*,*,*" Classes="StyleBorders">
+    <!-- Directory Selection + Filters -->
+    <Border Grid.Row="0" Grid.ColumnSpan="3">
+      <Grid RowDefinitions="*,auto" ColumnDefinitions="auto,*,auto">
+        <Expander Grid.Column="0" Name="FilterExpander" Header="Filter"/>
+        <TextBox Grid.Column="1" IsEnabled="False" Text="C:/Example.File.png"/>
+        <Button  Grid.Column="2" Content=" ... "/>
+        
+        <!-- Filters -->
+        <Grid Grid.Row="1" Grid.ColumnSpan="3" ColumnDefinitions="auto,*,auto,*,auto,auto,auto,auto" IsVisible="{Binding #FilterExpander.IsExpanded}">
+          <TextBlock Grid.Column="0" Text="Extension:"/>
+          <TextBox Grid.Column="1"/>
+          <TextBlock Grid.Column="2" Text="Name:"/>
+          <TextBox Grid.Column="3"/>
+          <TextBlock Grid.Column="4" Text="Full Name:"/>
+          <CheckBox Grid.Column="5"/>
+          <TextBlock Grid.Column="6" Text="Regex:"/>
+          <CheckBox Grid.Column="7" Margin="4,4,5,4"/>
+        </Grid>
+      </Grid>
+    </Border>
+    
     <!-- ListBox Headers -->
     <TextBox Classes="HeaderTextBox" Grid.Row="1" Grid.Column="0" Text="Before"/>
     <TextBox Classes="HeaderTextBox" Grid.Row="1" Grid.Column="1" Text="Operations"/>
@@ -21,9 +37,9 @@
     <ListBox Grid.Row="2" Grid.Column="2"/>
 
     <!-- Middle Section (Operations, Controls) -->
-    <Grid Grid.Row="2" Grid.Column="1" RowDefinitions="*,auto,auto">
+    <Grid Grid.Row="2" Grid.Column="1" RowDefinitions="*,auto,auto" Classes="StyleBorders">
       <!-- Operations ListBox -->
-      <ListBox/>
+      <ListBox Grid.Row="0"/>
       
       <!-- Operations Controls -->
       <Border Grid.Row="1" Classes="ConnectUp">
@@ -47,6 +63,9 @@
   </Grid>
 
   <Window.Styles>
+    <Style Selector="Grid > Expander">
+      <Setter Property="Margin" Value="4"/>
+    </Style>
     <Style Selector="Grid > ListBox">
       <Setter Property="Margin" Value="4"/>
     </Style>
@@ -66,6 +85,10 @@
       <Setter Property="Margin" Value="4"/>
       <Setter Property="Grid.Column" Value="1"/>
     </Style>
+    <Style Selector="Grid > CheckBox">
+      <Setter Property="Margin" Value="4"/>
+      <Setter Property="Grid.Column" Value="1"/>
+    </Style>
     <Style Selector="Grid > TextBlock">
       <Setter Property="Margin" Value="8"/>
       <Setter Property="Grid.Column" Value="0"/>
@@ -76,13 +99,13 @@
       <Setter Property="TextAlignment" Value="Center"/>
       <Setter Property="FontWeight" Value="Bold"/>
     </Style>
-    <Style Selector="Grid > Border">
+    <Style Selector="Grid.StyleBorders > Border">
       <Setter Property="Margin" Value="4"/>
       <Setter Property="Padding" Value="4"/>
       <Setter Property="BorderBrush" Value="Gray"/>
       <Setter Property="BorderThickness" Value="1"/>
     </Style>
-    <Style Selector="Grid > Border.ConnectUp">
+    <Style Selector="Border.ConnectUp">
       <Setter Property="Margin" Value="4,-5,4,4"/>
     </Style>
   </Window.Styles>