Are there universal rails for server chassis?

Question

Server equipment

Friends, do universal rails for server chassis exist in nature? I got a server on the MSI platform without them, and I can’t find anything suitable. The MSI site is silent, reporting only information about the server metering.
This is how we usually buy servers with rails, but here is an ambush ...
If they exist, share the links.

Answer 1

The most worker-peasant option - a pull-out shelf is bought, a server is placed on it.

Answer 2

asked a question without marking the server and box and wants help, I'm shocked by such questions