Are you referring to the plastic trim the looks like a roundish tube? I believe that is called plastic T moulding. Hard to tell what the profile is. This links to one of my favourite "toy" catalogs. They do sell to the public but you still have to have a minimum order of $25 in merchandise. I know they used to have it. Perusing thru the online catalog is a pain for me. I think I have an old catalog somewhere. I use the website for current prices and use the paper back catalog to actually look things up. The link is the closest I could find in the online catalog. I bought my baby binning strips thru this outfit. Love Outwater!