These models are 6mm figures from toe to eyes. The mounted figure has a height of 12.3mm from ground to top of the shako (plume not included). If you want to resize it to a 14mm figure just resize it to 114.5% in your slicer (all axes).
You can download the 6mm cavalry STL sample to evaluate these models https://www.wargaming3d.com/product/nap-wars-french-…eur-a-cheval-6mm/
Only for private use. Not allowed to sell or distribute in any way or format (virtual, image, printed or any other means).