Do you sell triple door bypass tracks?

Thanks for reaching out to us. Take a look at the 23-244, 23-245, and 23-246 top tracks. I'm afraid we don't sell your exact bottom track so we can't guarantee a direct fit but if the roller wheel is convex, see the 23-240, 23-241, and 23-242.

We aren't able to ship a track as long as you need, unfortunately. You would need to butt two smaller tracks together and then cut off the excess with a hacksaw. Just note that altered items cannot be returned for a refund. Our return policy can be found here. 

I am very sorry for any inconvenience.