While we started by making horn-loaded subs, we have since moved away from those designs in the past decades due to advances in amplifier technology, and improvements in loudspeaker efficiency. You can read more about this switch here: https://www.bassboss.com/david-lee-blog/horns-v-vented-subwoofers
Our current sub that is closest to a folded-horn sub is our VS21, which has the same footprint as many folded horn subs (and has a short-horn section, due to its hybrid horn/ported design): https://www.bassboss.com/catalog/vs21-mk3-single-21-powered-subwoofer