After fitting the sub-frame, you must measure the width, height and depth before requesting an estimate or sending an order.
Everything you need to know is set out in the document below.

Open document

Download document

Download Acrobat Reader To open/print Acrobat (.pdf) documents, you must have installed Acrobat Reader on your PC. This is available as freeware from the Adobe website by clicking the icon" width="88" height="31" hspace="5" border="0" align="left">