Window Channel weather stripping

[Pee Vee]

Is there a source for window channel for Betas? Talking about parts 28, 29, 30 below. I see a lot of different sizes available but the ones I pulled out of my doors are about 15mm x 12mm tall. I can find profiles that are:
Wide    x  Tall
1/2"     x  1/2"
1/2"     x  15/32"
9/16"   x  17/32"
37/64"  x  9/16"

I'm thinking the 9/16" x 17/32" is the closest but it seems like it would be loose in the channel. The channel itself is about 15.5mm wide. Maybe I'm taking the dimensions too literally?

http://www.metrommp.com/metrocart/typedetail.cfm?ModelNumber=WC%2022-96&Type=Window%20Channels%20&%20Sweepers

[MattNoVAT]

Have you tries Woolies-Trim?

Google them - they do the window seals

[Pee Vee]

I can report that this stuff seems to fit pretty good despite it seeming like it would be loose if you just looked at the dimensions.

http://www.metrommp.com/metrocart/typedetail.cfm?ModelNumber=WC 21-96&Type=Window Channels & Sweepers

http://www.rockauto.com/dbphp/x,catalog,82,partnum,WC2196,d,METRO_WC2196.html

[Pee Vee]

Well the profile I said looked good is really too tall to work properly. 
It interferes with the reveal trim on the outside of the window frame so it pushes the rubber closed. Looks bad too.
PV