diff --git a/comet/overlay/frameworks/base/core/res/res/values/config.xml b/comet/overlay/frameworks/base/core/res/res/values/config.xml
index 5eb4b7e..81aeacc 100644
--- a/comet/overlay/frameworks/base/core/res/res/values/config.xml
+++ b/comet/overlay/frameworks/base/core/res/res/values/config.xml
@@ -289,4 +289,16 @@
          corners with radius equal to min between device bottom corner radii. Default 0 value turns
          off rounded corners logic in LetterboxUiController. Values are in pixel. -->
     <integer name="config_letterboxActivityCornersRadius">64</integer>
+
+    <!-- The width in dp to use to detect vertical thin letterboxing.
+         If W is the available width and w is the letterbox width, an app
+         is thin letterboxed if the value here is < (W - w) / 2
+         If the value is < 0 the thin letterboxing policy is disabled -->
+    <dimen name="config_letterboxThinLetterboxWidthDp">28dp</dimen>
+
+    <!-- The height in dp to use to detect horizontal thin letterboxing
+         If H is the available height and h is the letterbox height, an app
+         is thin letterboxed if the value here is < (H - h) / 2
+         If the value is < 0 the thin letterboxing policy is disabled -->
+    <dimen name="config_letterboxThinLetterboxHeightDp">-1dp</dimen>
 </resources>