Sorry for the delay in responding - note the link:https://www.replacementboatparts.com/ventgrill4whitemaxflow.aspx
For the mesh, went to Bezo’s site: TIMESETL 2 Pack 304 Stainless Steel Woven Wire 8 Mesh, 12"x24"(30cmx60cm) Cabinets Wire Mesh Garden Guard Screen Metal Security Mesh Window Screen...
Agree. I will need to keep an eye on them throughout the season. We had the issue with wasps wanting to build nests in the blower exhausts prior to this install.