app/views/spree/admin/barcode/basic.html.erb
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<%= stylesheet_link_tag "admin/html-label" %>
<%= stylesheet_link_tag "admin/html-label" , :media => "print" %>
<title>Barcode</title>
</head>
<body>
<div>
<table valign="middle" width="200px" height="75">
<tr class="label-name">
<td colspan="2"><%=@product.name%> </td>
</tr>
<tr>
<td>
<img src="<%=product_barcode_url%>" height="40" width="132"/>
</td>
<td class="label-price" width="60px"align="right">
<%=@product.price%> €
</td>
</tr>
</table>
</div>
</body>
</html>