I use am xl for my 3 1/2 goot male.hes 1300g. He still has.some room to grow in it.
I have a large one in his tank that fits him very.snug but hes.almost out grown it.
So i would say a 1300g + snake would benefit from a xl hide.
Tarantulas & Other Arachnids
0.2 G. rosea, 0.0.1 P. murinus, 0.0.1 B. sabulosum, 0.0.1 L. difficilis, 0.0.1 A. geniculata
0.0.1 A. versicolor, 0.0.1 L. parahybana, 0.0.1 Hapalopus sp columbia, 0.0.1 B. vagans
0.0.1 Asian Forest Scorpion