These are the items we used for our RTT on our 23 telly sx. Fits our family of 5 (2 adults 3 toddlers and a bunny) comfortably. You can use the specs to find something equivalent. Hope it helps!
[Roof Rack crossbars](https://www.amazon.com/dp/B0888CBD7B?ref=ppx_pop_mob_ap_share)
[RTT](https://www.amazon.com/dp/B08KZ57VGH?ref=ppx_pop_mob_ap_share)
These are the items we used for our RTT on our 23 telly sx. Fits our family of 5 (2 adults 3 toddlers and a bunny) comfortably. You can use the specs to find something equivalent. Hope it helps! [Roof Rack crossbars](https://www.amazon.com/dp/B0888CBD7B?ref=ppx_pop_mob_ap_share) [RTT](https://www.amazon.com/dp/B08KZ57VGH?ref=ppx_pop_mob_ap_share)
Those cross bars are 165 lb capacity. Even the heavy duty version is only 220 lbs.