diff --git a/templates/Layout/IFramePage.ss b/templates/Layout/IFramePage.ss
index a6d6662..579aa4b 100644
--- a/templates/Layout/IFramePage.ss
+++ b/templates/Layout/IFramePage.ss
@@ -4,7 +4,8 @@
 	$Content
 	<% if IFrameURL %>
 		<span id="Iframepage-loading" style="display: none;">Loading content...</span>
+		<div class="nonvisual-indicator" style="position: absolute; overflow: hidden; clip: rect(0 0 0 0); height: 1px; width: 1px; margin: -1px; padding: 0; border: 0;">Please note the following section of content is possibly being delivered from an external source (IFRAME in HTML terms), and may present unusual experiences for screen readers.</div>
 		<iframe id="Iframepage-iframe" style="$Style" src="$IFrameURL" class="$Class">$AlternateContent</iframe>
 	<% end_if %>
 	$BottomContent
-</div>
+</div>
\ No newline at end of file