Yes, there were fans available when purchasing new, and any of the vents could have them installed during manufacture of the TT.
Ours has a powered fan over the lounge, but the other vents in our '74 Sov are passive. There are third-party fan makers that can be installed fairly easily if you are handy with tools, or your dealer/repair depot can put them in for you.
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“Courage is being scared to death, but saddling up anyway.” ...John Wayne...........................
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