This is a remix of the K3D Sprite Dual 5015 model originally by Sorkin. Then lower duct part is used from the seperated duct version and the upper mount part from the CHC hotend mod version as it has a few optimizations and mounting holes with more height for adjustments (both by 53Aries)
My only change was to merge both versions and move the fan ducts 3mm outwards to make space for the larger Spider Hotend / Creality High Flow Kit Heatblock.
The author remixed this model.