Is 1990mm x 804mm a standard door size?

I need to replace the door between my kitchen and attached garage.

I've measured it as 1990mm x 804mm. It's a good close fit to the door frame. It doesn't appear match any of the standard metric or imperial sizes I've found listed.

Does anyone know if this is a standard size of door?

Also, I believe that a door in this location should be half hour fire rated. The existing door isn’t fire rated but the replacement probably should be.

I assume that a fire rated door can’t be trimmed down to fit due to the inturnescent strips?

Thanks.

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I assume that this means that the door isn't a standard size?

So I'm either going to have to trim a door to fit the frame, or modify the frame to fit a standard door.

Any advice would be much appreciated.