Folding canvas-slat seat

[Louis Michaud]

I would appreciate some information, slat width and thickness, for these folding/rolled-up canvas-slat canoe seats. I've also seen them labeled as "Loafer seat".
An example at Wooden Boat's store:

http://www.woodenboatstore.com/Howda-Seat/productinfo/840-009/

I have some leftover canvas and straight grained ash...

Best,

Louis Michaud
Rimouski, Quebec