Hi Mimi,
It's called Trim Lock. 3 weeks ago I ordered it from Panther Products, and it looks great on my '82 Burro! Here's some information and a link you may find helpful:
Trim Lock for
Burro Camper
https://pantherrvproducts.com/vinyl-...-burro-campers
Vinyl Trim Lock White 1/2" H x 3/8" W -
U-Haul /
Burro Campers
Trim Lock is metal covered with white vinyl 1/2" high x 3/8" opening. This is perfect for
U-Haul CT13 and VT16 exterior center trim; a CT13 takes about 25 Feet. A 13ft Burro takes 25ft.
$2.29/Ft
Panther Products
460 S Grant St. #14
Washougal, WA 98671
9-3 M-T PST
9-12 Fri PST
(360) 844-5398
SKU: 1350W2X3/8
All the best,
RJ