These were an absolute pain to modify for installation (in my opinion).
They were purchased to be used as a double door entrance to our gym (48" wide opening, so we bought a double 24" door kit). Instructions included are vague/incomplete, but you can find better ones from the manufacturer's website. Each of the two included metal rails is ~78", which means we had to cut them both to fit the opening plus the space along wall when the door is open (requires grinder, file, etc.) and you may have to drill new holes for the anchor bolts. Once modified, you lose the nice textured black finish which is something to keep in mind.
The floor guides included in the kit to keep the doors from swinging outwards require you to cut a kerf (channel) in the bottom of both doors with a router. However, the doors are glued/screwed together along the bottom, which makes this step difficult to complete as it was very easy to damage them (they are solid pine and MDF). The heads of the screws that were removed for the 1/4" kerf had to be modified so they could fit back in place to hold the doors together.
There is no catch to keep the doors centered when they are closed, so you have to gently position them and leave them in place or come up with a modification.
Personally, I don't think this kit is worth the price, and it required hiring someone that really knows what they are doing to make it work in our case. This is not an easy DIY install.