I recently had a Vermont castings encore installed and wanted to add a wall mounted heat shield because I’m neurotic We’re the distance to combustibles plus 3” to allow for the shield. I see a lot of metal shields but I was interested in doing durarock with .5” ledger stone but I’m super confused on how to finish the sides? I understand I need the gap at the top and bottom but it’s a corner install so I’d like to finish the sides but I’m at a loss of how to do so and I can’t find anything online other than just sheet metal open on all four sides. Hoping someone here has something similar!