He hanged himself in an elevator shaft.
4 seconds sound clip from the House of Wax (1953) movie soundboard.
You can hear this line at 00:43:22 in the Blu-ray version of the movie.
Quote context
[...]
- I told you that I intend to exhibit scenes of violence.
- Here is an interesting subject. A mystery they're still talking about.
- I saw that man's picture in the papers. This is a remarkable likeness.
- But it can't be a death mask.
- He hanged himself in an elevator shaft.
- Come in, ladies and gentlemen. See the House of Wax. See the Chamber of Horrors.
- Here's three lovely ladies right over here.
- Would you like to see Little Egypt?
[...]