This is a chain riser for the Creality K1 max. 

The chain was always touching and rubbing the gantry or the linear rod.

It's intended to be used with superb riser from Sprintech : https://www.printables.com/model/946280-k1-k1c-k1-max-riser-v2 as the back support replace one of the clip that attach the riser to the frame

It was made with the intent to have a chain delete mod but still be able to close the top lid without having to make a gigantig riser, and this is the version to still use the original chain from the k1 max (that's the reason I have a cable sleeve on the cables).

The chain_riser.stl just need 1x standard M3 insert and the chain_support.stl needs 2x.
You just have to remove 4 chain link otherwise it's too long
You should be able to use the original fan shroud but the cuts on the side are for if you have the Skeletor mod or another fan shroud