These are Quantitative Filter Paper, Grade 203, with 100 circles in each package.
The size of this filter paper is large (180 mm, 18.0 cm)

Type: Quantitative Filter Paper
Speed: slow
Grade: 203
Maximum pore size: 10~15 µm
Filtration speed: Ash Content: Basis Weight 80 +/- 4

LL-PF1000203L-100