Heatpipes always have different distances and there is a hole in the floor to leave them thru which is always different. This one in our doorway wasn't symmetric and standard covers (round) doesn't fit. For years i had cut the round one's looking terrible.

This is now a special designed cover matching our special situation. 35mm distance between the pipes, pipes are 15mm - i used 16mm diameter for holes.

If it matches your situation use it - if not - change the OpenScad file. I haven't made it parametrizable - if i have some time - i will change this.