Where did you look for those models?
A quick search in the 3D Warehouse returned various octagonal poker tables:
https://3dwarehouse.sketchup.com/search.html?redirect=1&q=poker+table&ctyp&btng=search+3d+warehouse
The same goes for louver doors
https://3dwarehouse.sketchup.com/search ... ass=entity

Best, slimpy