Hoping someone can help me with the right part-name so I don't look a
complete numpty when I try to buy it...
We have some fire-doors, which slam closed. Very useful for stopping fires,
but pretty noisy and annoying when they slam shut behind you.
So I'd like to fit them with those things-which-close-doors-slowly. I mean
the things which have a spring (I think) and a damping mechanism so that
the force is exerted slowly not at all once.
I can visualise exactly what it is that I mean, but what are the darn
things actually called?
Ta for any help