I bought the masticated rubber from Resoration Specialties when I made my own. Next time I bought pre-cuts from Repops and was pleased.
Do you mean this company?
http://www.repops.com/
I checked there and apparently you can't order direct from them? It says this
For Pricing or Ordering,
Contact Any of Our Partnered
Retailers and Distributors.
Affirmative. Repops. I spoke with them today. Page 90 in the catalog. If you call she will provide the part#. Nice gal. Ask them to text you a pic. I'd do it here but I gave my roll to a friend for his project. They sell it by the foot. I may have purchased it directly with my business or asked who the vendor was. Sometimes one has to sand a piece here and there if you want to see the fibers. Sharp scissors is an understatement, and you have to punch the holes in the corners like factory. I have some so old and worn there are far too many fibers showing. As we all know rubber deteriorates after 50 years.