Sauna stove Kota Inari:
540 x 555 x H 870 mm
https://db.by/cataloge/pechi-dlya-bani/drovyanye/pech-dlja-bani-narvi-kota-inari/ 


Without Turbosmooth modifier:
Polys: 199 100
Verts: 194,497
With Turbosmooth iterations 1 modifier:
Polys: 578,964
Verts: 357,756

The Turbosmooth modifier with Isoline Display was applied to the required objects;
There is an FBX file (if necessary, apply the Turn To Poly modifier to the FBX file);
For Corona render, it is recommended to install version no lower than 1.5, since the glossiness of materials is configured taking into account PBR.