Heads Up! Terrible picture and no information except that's it's an army trailer for $800.00 in the St Paul area. Looks like the type a 5/4 Ton used to tow. Look under "Recreational Vehicles" then "Utility Trailers"
https://www.infomall.ca/tradingpost.php?cat=182
https://www.infomall.ca/tppics/1224639-61501-tn.jpg
You will have to use their contact form to reach out as there's no number listed. No relation to the seller.