Here it is! https://www.amazon.it/dp/B0042LNU32/ref=cm_sw_r_apan_i_W2FBP8VV5Y9A58X3TKH1?_encoding=UTF8&psc=1 This is perforated plastic and not regular plastic canvas (from what I recall they are different things?), so even if the count is always 14 it has way smaller holes :D I love it!
I've used this in my own attempts before- its cross stitch mesh and is easy to come by.
I would go the spidey route of perforated plastic (mesh style) or metal mesh(splatter pan)