I am replacing a shower. The trap for the new tray sits 40mm proud of the floor level. Can anyone help with a shallower trap? I don't really want to raise the new shower tray. The top of the 40mm outlet pipe is 45mm from floor level.

The trap for the new tray sits 40mm proud of the floor level. What's "proud of the floor level" mean? What happened to the old shower trap?

The top of the 40mm outlet pipe is 45mm from floor level. What's the problem Seems to me a regular trap would install just below the floor line.
Can you repost with more details. Back to you, Toim