RV moulding

you mean the plastic strip that slips into the aluminum closure strips then on the exterior? Covers the screws? I wouldn't call that molding. ANY RV parts house has that stuff by the roll in a few colors. If you take an old piece and measure the width when it's flattened out you'll see what size you need.

I've bought moulding and rubber gaskets off Amazon. Exactly what I needed.

(ahhh, Glencoe - the place that made my wife declare she'd never go back (she was right)

See you at Glencoe site I32

I am in Bellingham WA. I don't know how to update my profile to add my location.
The moulding is all of the exterior seems that are covered by metal rails that holds the moulding in place. It is everywhere on the trailer all 4 sides, and around the door. The original moulding is white, but mine has faded black. I bought some standard 1" moulding, but it doesn't fit right in the metal rails. I would add a pic if I knew how.

where are you located. It helps if you populate your profile.

What kind of moulding are you looking for? Where does it go?