That is odd, because what BD told me is that they don't make Eldorados with flame retardant. Maybe they did at one time and that one is old stock, but that would be a guess.

You would think that the maker would know what they are selling, but perhaps the customer service rep was mistaken. There is always the possibility the tent was mislabeled. One way to find out is to weigh both of them. The fire retardant adds 8-12 oz, according to BD.

If you are curious, email them and see what they tell you. As long as you aren't cooking in your tent, it probably isn't all that relevant.