National Bi-Fold Doors - replacement parts

Question

I'm looking for replacement parts for my 1970s National Bi-Fold Doors.

Specifically a top and bottom guide pin for one door (the other pieces are fine).

Picture 1) Original installation instructions.
Picture 2) Full picture of door.

Dimensions: 78.5 inches high, 29.25 inches wide.

Picture 3-5) Picture of functional bottom guide pin in a working door. The plastic cap is a single piece.

dimensions (roughly): length 4.5", width of metal 1/4", width of plastic 3/8".

Picture 6-8 [ran out of pictures]) Picture of functional top guide pin in a working door. The plastic cap is composed of two pieces, a plastic washer and a plastic end piece.

Same dimensions.

Even though the brand is National, the closest bottom piece looks to be this one by Fenestra. I didn't find anything with a two-piece cap like the top piece. I'm not sure whether or not this difference matters.

https://www.swisco.com/door-pin-fenestra/pd/Bifold-Door-Pin-Assemblies/21-095

Please reply with your suggestions.

Thank you for your help.

Sincerely.

Marc

Casey · Accepted Answer

Hello,

We'd be happy to help but, unfortunately, your photos didn't come through. This can sometimes happen if the file size is too large. If you could resend them, we can start researching your replacement options. In the meantime, take a look at our guide here that explains the information we'll need to identify the correct parts for your door. Thank you!