Hinge thickness

[HERMES]

I'm confused by hinge thickness

I have looked at 3 inch hinges and there seems to be a few different thicknesses of hinge.

Apart from the fact that one hinge is thicker from the other is there any other difference between thick and thin hinges? are thinner hinges to be used for certain applications and thicker ones for other applications?

Are one type easier to fit than others?

Sorry for asking such a question, but I don't have a clue

[Hitch]

Mostly its just the qualityand capacity, although fire resistance and things like that will com into it on some hinges.

A heavy hinge will carry more weight than a lightweight hinge.
Like the difference beteen a value price hoolow internal door, and a solid hardwood door that weighs thrice as much

As for ease of fitting, virtually nothing init, if your comparing butt hinges.

Lighteweight flush hinges are easier to fit, as they don't need recesses.

[big-all]

other things about thin/light hinges
you can not recess them into the door and frame as you will have no clearence

in other words if your hanging a new door and re-using the hinge pocket in the frame you may only need to secure the hinge to the door flush otherwise you loose the 2mm gap