Top oak roof top tent Ladder weight rating

[MDFI29]

Hi All, looking at Top Oak roof top tent for my 2019 4Runner off road, have been looking at Top Oak tents, and did not find anything listed on the website, for a ladder weight rating, have sent two emails zero response, if someone on here has a top oak roof top tent and share what the know would guess they have it on the ladder if you could post a pic of that info, any help would be apricated, Darin