Matty---I think your file size is limited to 250 kb
I'm thinking this chimney may be an older model----should have tags
One word of caution-----it's usually preferable to get professional advice on these matters---A fishing website can help along---but I would caution using it as a sole info source
Especially when it comes to someone heating a bldg.---insurance companies love to refuse claims unless everything is crossed and dotted----and that includes new installations of equipment (chimney)
Look at the flags around something simple like a garage sale-----I've heard you may be liable for selling defective items that may cause injury
Not the same world out there