Tom from SWISCO responded:
February 17, 2022
Thanks for reaching out to us. Most metal bifold door tracks are meant to work for both the top and bottom, our 21-455 included. These aren't made in "top" or "bottom" variants. You also don't state what size you actually need, so I'm not sure what lengths would be the ideal combination. They can be cut down if necessary, though. |
Tom from SWISCO responded:
February 18, 2022
Thanks! That makes sense. Two 24" tracks would be the easiest to install, since you can probably put them into the opening right out of the box. However you'd have to butt them together as seamlessly as possible for them to work, and even then the seam between tracks might cause issues years from now after so much use. It's unavoidable. Cutting a 72" track down to size would avoid that entirely but it is more work. I guess it just depends on whether you want a hassle now, or later. |