Can R4000-FT3 be used on a standard 19" rack with standard PDU or does it require Penn racking?

Thank you for your enquiry. This is designed to be used in our range but see no reason why it cant be used on other units. You would of course need to check the position of the fixing holes and the cut out etc. Please find a link to a 3D CAD - https://www.3dcontentcentral.com/download-model.aspx?catalogid=6237&id=1752924 Kind Regards Penn Elcom