Anet A8 E3Dv6 Clone Cooling Fan Duct

Fan duct I'm using to cool the hot end using the stock 40mm fan. The inner circle is 22.5mm across and fits my clone perfectly, no guarantee it'll fit yours. I'm using this carriage https://www.thingiverse.com/thing:2099577 and the one linked in its description was too tall and melted from touching the heat block.