well i also have a mopar branded tri fold flush unit it has 2 drains and yes it lets alot more water in the bed than the top mount trifold i had on my last truck. it is a truck bed after all i accept that it is not going to stay dry. tri folds are not waterproof. get a body color fiberglass i piece if you want the bed to be a trunk.
after doing some research i have come to the conclusion the mopar is a rebranded BAKFlip MX4
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