Millguard sliding glass patio door
Thanks for posting. I'm pretty confident we can help, but we need you to remove a sample of the wool pile and give us the size of the base and the height of the pile. Wool dimensions are very discrete, often going into the X/32" range, so be specific as possible. In the time being you can view our wool pile section here.
It looks like the width of your base is 3/16", but I unfortunately can't make out the height. At the end of the day, there's only so much we can garner from just a photo of a ruler; you will need to measure your old pile as carefully as you can and use your best judgment as to what the size is.
In the meantime, one possible replacement option could be our 58-021. This is a gray pile with a center fin seal, and measures 3/16" wide by 3/16" tall. Look it over and see what you think.