Stoves, Stoves Inset Riva 45 Inset Stove Share Riva 45 – Key Facts Overall dimensions 492 x 709 x 350mm (w x h x d)* Heating efficiency Up to 83% Heat output 5.0kW Cleanburn system with Opti-Burn Yes Airwash Yes Riddling grate Yes Maximum log length 250mm (9 ¾”) Flue connection 128mm (5″) top only Riva 40 Inset Stove Riva 50 Inset Stove Leave a Reply Cancel reply Your email address will not be published. Required fields are marked * Name* Email* Website Comment You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong> Notify me of follow-up comments by email. Notify me of new posts by email.