Flame King Propane Tank YSN164 is DOT certified, compatible with all camping appliances. Vertical mounted 8-3/4" high. Easy and safe to refill in under a minute from your large tank, from the comfort of your backyard. Note: you need an adaptor to connect tank-to-tank (not included, can see them online) Brand new and unused, in season these tanks cost $60 range. Brand new and unused (and of course it's empty).