How do you Hang a heavy mantle without cleats or corbels?

The only other way to hang a heavy mantle, unsupported otherwise elsewhere than at the ends, is to fix it with the help of suitable anchor fasteners available for several reliable makes like Hilti, Fischer, etc.

The structure to be hung must be fixed with suitably designed end plates in structural steel, which then can be anchored on to the receiving surfaces (ends).

-Shelly
http://bricks-n-mortar.com