GSM stands for grams per square meter, the metric measure of how much a sheet of paper weighs. It is a direct read on density: the higher the GSM, the heavier, thicker, and more rigid the stock tends to feel in the hand. What it measures: the weight of one square meter of the paper, no matter the sheet size, so it compares stocks fairly. Why it matters: heavier GSM reads as more premium and durable, while lighter GSM folds and mails more easily. GSM is not caliper: two sheets can share a GSM yet differ slightly in thickness depending on how the paper is made. Product Typical weight Feel Flyers and inside pages 130 to 170 GSM Light, foldable Postcards and covers 250 to 300 GSM Sturdy Business cards 300 to 400 GSM Thick, rigid

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Question

What does GSM mean?

Answer

GSM stands for grams per square meter, the metric measure of how much a sheet of paper weighs. It is a direct read on density: the higher the GSM, the heavier, thicker, and more rigid the stock tends to feel in the hand.

What it measures: the weight of one square meter of the paper, no matter the sheet size, so it compares stocks fairly.
Why it matters: heavier GSM reads as more premium and durable, while lighter GSM folds and mails more easily.
GSM is not caliper: two sheets can share a GSM yet differ slightly in thickness depending on how the paper is made.

Product	Typical weight	Feel
Flyers and inside pages	130 to 170 GSM	Light, foldable
Postcards and covers	250 to 300 GSM	Sturdy
Business cards	300 to 400 GSM	Thick, rigid

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