WPI-g-00007640–450 g/m²Virgin kraft56% confidence
2550/450 Size Press.
Printing paper grade. Permanent ID WPI-g-000076 — verified, source-traced, free.
GSM 25
25g/m²
lighter
GSM 40 · this
40g/m²
WPI-g-000076 · standard
GSM 70
70g/m²
heavier
01
Canonical specification
Basis weight
40–450g/m²
Fiber source
Virgin kraft
printing
Paper type
printing
Confidence
56%
source: wpi
WPI ID
WPI-g-000076
Slug
2550-450-size-press
Last updated
2026-04-18
GSM range
40–450g/m²
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