Would you say the same about a window with a metal frame of a size of a door ( or almost ) ? I have them at the university. People leave them open and it happened to me today for the second time ( first one was months ago ) that the wind blow shut it when I was maybe 1m20 away from it. ( God thanks, not RIGHT next to it ) but both times I was priviliged to be the one who was the closest and I was on my way running from it , yet it caught me ! I just can't believe it, it's as if some fatum was lurking at me. I really feel that. Wood, metal, does it make a difference? I know on the net the circulating info says a slamming door is 90 db, but that's what it is if you slam a car door and that's not even nearly as loud as a huge slamming window or doors, so it seems to me. That was in the beginning of the class, I couldn't focus at all on what the teacher was saying, thinking constantly HOW LOUD WAS that blasted slam ? Would anybody have a proper info ?