Did you know? Even if two papers have the same GSM, they might have different calipers (thicknesses). Air is often added to paper to make it feel bulkier without increasing the cost of raw fiber.
Copy Paper
20 lb Bond / 75-80 GSM
Heavier Flyer
80 lb Text / 120 GSM
Postcard
100 lb Cover / 270 GSM
Heavy Cover
130 lb Cover / 350 GSM
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