Inspired by the Creality K1 Hinged Riser Shutter @JadeOrcajada_292962, I decided to create my own version that was a little more stout and included the ledge for the lid to make it more contiguous with the corners. Also included a mid-slot tied version to connect the slot chevrons for easier printing. They are .25mm thick x 1mm wide and can easily be removed during post processing, or left intact if desired as it should have minimal affect on ventilation.

This is a work in progress and I may include additional files or tweaks as needed. Will also include better pictures once I get mine mounted on the printer.