It slides right under the bottom of the door into a metal grooves. I think it’s an old design but we are moving and just want to find a replacement instead of taking down all thre doors that have the same rubber seal. Thanks for your help!

If you want to replace it, you may have to pull the hinge pins so you can get at the bottom of the doors. It may be necessary to remove the old mounting strip and install another type of weatherstrip.

This one might work:

Door Parts: Bottom / Sweep, Slide on, Fin Type - Beige color

https://www.amazon.com/Door-Parts-Bottom-Sweep-Slide/dp/B00079RDWW

Adding that I had the same problem with the metal door to my shop three or four years ago. (Worst freaking design ever for doors in snow (and ice) country. )

At the time, could not find a sweep to fit. Tried to retrofit something and that didn't work. Ended up just replacing the whole door with a pre-hung door out of frustration (plus the old door was starting to have some rust problems anyway.)

Not intending to discourage you...just adding so anyone who might be shopping doors to investigate door bottom/ threshold weather stripping to avoid doors with this design.

I have seen the op's weathersel before. But they were always brand dependant as to the size and the way they slid on. I have no idea anylonger on where to send you.

they were always brand dependant

Yup. And with an existing painted over door, you most always don't have a clue to the manufacturer so you're hamstrung from the get-go on trying to find a replacement. Turns what should be an almost tool-less 5 minute/ $5.98 repair into a semi-major undertaking.

One suggestion--if you can't find the replacement seal, you could look into the slide on U-channel door bottoms. I didn't go that route because the door in question is exposed to elements (no porch) and the exterior lip on a slide on looked like it would trap water/ salt water from de-icers next to a metal door--more rust--so would have been a very short term solution.

Thanks all for the comments! Exactly.... what I was thinking should be a 5 minute stop at Home Depot to pick up the inserts has been hours of internet searching. My husband wants to take off the metal part on the doors but they are old and I’m afraid the wood would come with them. We are selling our house and want the easy fix of course after renovating everything else. Would a self adhesive foam strip do the trick if it fits in the area where the other slid in to?

1. An adhesive foam strip would likely become detached soon from rubbing against the threshold.

2. I don't understand why you think removing the old metal strips would damage the doors in any way.

We live in Phoenix where the heat makes everything adhere to everything else. We could try it but as I said I wouldn’t be surprised if part of the door came with it. Has anyone tried this product?

https://www.homedepot.com/p/Prime-Line-1-4-in-x-216-in-Gray-Synthetic-Pile-Self-Adhesive-Weatherstrip-T-8722/203028384

I still fail to see why removing the strip would damage anything. It's likely held in place with a couple of screws or nails. I'm presuming you have no experience with the simple task of demounting a door by pulling the hinge pins?

They aren’t just screwed on they are glued on as well. Just looking for a creative solution that doesn’t involve taking them off 3 doors and then possibly having to replace all the doors as well.

Not trying to be contrary, but how do you know they are glued on? That's not how they are typically applied. And, even if they were glued, they could be easily separated by prying them off with a chisel after the screws were removed. I've never seen a door damaged by changing out the weather strip....

No to the pile weatherstrip. It's not going to stay stuck.

A wood door in Phoenix? Lot of options to get around the system that the mfg. used.

To remove the metal strip on the bottom of the door: Take the door off the hinges, remove the screws holding the metal strip on, use a gasket scraper or stiff putty knife and pry up one end of the metal strip. Latch onto the pried up end with vise grips and start pulling.

Then replace with whatever you can find that will fill the gap between door bottom and threshold.

Thanks again. I did ask a contractor to take the thresholds off and he said it was risky as the wood beneath could be rotten. It’s a 20 year old house exposed to extreme heat which does a number on everything. My mistake was taking out the vinyl seals and chucking in the first place. We’re trying find the easy and less risky fix but maybe that’s not possible now.

Try something like this sweep

Unless the doors have been exposed to lots of driven rain over the years, I doubt they are rotten on the bottom. Also, if the wood was rotten, the old strips would likely be loose already. In the unlikely event that you find that there is damage so extensive that you can't mount a new strip, there are easy-to-use epoxy kits that restore strength to damaged wood. I don't see a scenario where replacing these strips is going to involve having to replace the doors.

Ok we’ll give it a go as it does seem pretty easy.