weather strip? or seal? for a 1978 ticonderoga

[azlaine]

We have a 1978 Ticonderoga and the step had a T shape weather strip the went on either side of the step/ door and it is pop rivets in between the door shell/skin and the actual step.
Would you be able to tell me where to purchase this or the real name for it?? thanks

[azlaine]

this is what i'm looking for if anyone could help please