I have eight pairs of these hinges. If you Google Eclipse 4” hinges it looks as if they are readily available so you can see the specification online. Looks like they are designed for fire doors, which would fit because I salvaged them from some heavy fireproof cupboard doors which were delivered to our community bonfire pile. Not huge doors, so won’t have had the weight of a full size door on them. Would prefer that they go to someone actually looking to use them rather than for attempted sale. Some screws salvaged as well but not the full quota.

Heavy duty hinges (Barnard's Green WR14)