1. A diffuser for a jet engine of some sort?
  2. No, but it achieves it's purpose through diffusion.
  3. It's a jet diffusion plate for a gas burner/heating element.
  4. I'm guessing you got it.
  5. it has nothing to do with any type of engine.
  6. Goes in the end of a big water hose
  7. no
  8. Why bring this up again?
  9. Because I mis-read your and Herb's posts. I should have said it is not a jet diffusion plate for a gas burner/heating element. The jet thing through me off.
  10. This is 6-7" across. It is made of cast iron. It is a stand alone object.