No idea where they were made and no replacement parts. Several members have or are currently restoring existing ones. Do a search on fire pit. You are talking the wood fire pit, and not the Weber Flame which is either NG or LP fired?
Not much remains available for these. Ereplacement parts lists two model numbers: 2710 ('84-'90) and 2720 ('91-'95). Not sure what the differences are between the two model numbers, but the box for the 2710 shows black legs instead of unpainted aluminum.