diff --git a/Casks/sizeup-x11.rb b/Casks/sizeup-x11.rb
new file mode 100644
index 000000000..b821db3f9
--- /dev/null
+++ b/Casks/sizeup-x11.rb
@@ -0,0 +1,15 @@
+class SizeupX11 < Cask
+  version :latest
+  sha256 :no_check
+
+  url 'http://www.irradiatedsoftware.com/downloads/SizeUpX11.zip'
+  appcast 'http://www.irradiatedsoftware.com/updates/profiles/sizeup.php'
+  homepage 'http://www.irradiatedsoftware.com/sizeup/index.html'
+  license :unknown
+
+  app 'SizeUp.app'
+  zap :delete => [
+                  '~/Library/Preferences/com.irradiatedsoftware.SizeUp.plist',
+                  '~/Library/Application Support/SizeUp',
+                 ]
+end