what is the larges sized block of 300 pound, cold pressed?

I believe it is 10 X 14 inches. That is the largest arches 300 lb watercolor BLOCK paper pad I’ve seen.

Can both sides of 300lb cold-pressed paper be used for Watercolor?

Yes! Whatever side of paper of the paper you prefer. 300lb. Water color paper is quite heavy so less likely to buckle.

How thick (NOT weight) is each sheet in inches or mm?

This is 300 lb water color paper. It isn't measured in thickness, whether inches OR millimeters. It is just as thick (or just as thin) as all other 300 lb watercolor paper. The only way to tell how thick a sheet is would be to put a micrometer on it. All that said, it is not _very_ thick--perhaps about as thick as stiff poster board.

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Water Colour Block, 300 lb / 640GSM, Cold Pressed, 9" x 12"

Water Colour Block, 300 lb / 640GSM, Cold Pressed, 9" x 12"

Product ID: 45732072

Details

Brand
Arches
Color
White
Material
Paper
Paper Finish
Watercolor
Sheet Size
9 x 12 inches

📏300 lb / 640 GSM heavyweight durability

🧬100% cotton fibers with gelatin sizing to the core

🖌️Cold pressed texture for perfect paint control

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€ 106.11

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Details

Brand
Arches
Color
White
Material
Paper

Description

🎨 Elevate your art with the legendary heavyweight canvas of Arches Watercolour Block!

UNMATCHED DURABILITY - 300 lb / 640 GSM heavyweight paper resists tearing and warping even with heavy water use
HERITAGE YOU CAN TRUST - Crafted since 1492, Arches paper guarantees longevity and premium quality for your finest creations
PURE COTTON EXCELLENCE - 100% natural white cotton fibers ensure archival quality and timeless beauty in every sheet
GELATIN SIZED TO THE CORE - Exclusive sizing enhances color vibrancy and allows effortless blending, overlay, and paint removal
MASTERFUL TEXTURE CONTROL - Cold pressed surface offers the ideal balance of absorbency and texture for professional watercolor techniques

Arches Water Colour Block is a premium 9" x 12" cold pressed watercolor paper block featuring 10 sheets of 300 lb / 640 GSM 100% cotton paper. Its unique gelatin sizing to the core enhances color brilliance and blending, while the heavyweight and cold press texture provide superior durability and control. Trusted by artists since 1492, this block offers archival quality and a luxurious surface that resists tearing, warping, and linting, making it the ultimate choice for professional watercolorists seeking lasting masterpieces.

Specifications

ASIN	B01J9UMQHQ
Best Sellers Rank	#25,321 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #147 in Watercolor Paper
Brand	Arches
Brand Name	Arches
Color	White
Customer Reviews	4.8 out of 5 stars 687 Reviews
Global Trade Identification Number	03700417950659
Included Components	Contains one block with 10 sheets, 640 GSM
Item Dimensions L x W	12"L x 9"W
Item Type Name	140lb / 300GSM, Cold Pressed
Item Weight	1.4 Pounds
Manufacturer	ColArt Americas
Material	Paper
Material Type	Paper
Paper Dimensions	9 x 12 inches
Paper Finish	Watercolor
Paper Weight	10
Product Dimensions	12"L x 9"W
Recommended Uses For Product	Watercolor
Sheet Count	10
Unit Count	1 Count
Warranty Description	Premium Art Papers Since 1492 - After five centuries, the Arches philosophy remains the same: to make the best papers and enable you to produce your finest works while guaranteeing they will last as long as our papermaking heritage

Reviews

D**E

6.02.2026

M**S

9.09.2025

N**A

20.07.2025

H**S

24.10.2025

M**A

23.04.2021

L**S

16.11.2025

B**W

17.01.2026

B**Z

30.04.2026

J**O

19.01.2020

A**R

4.01.2026

A**I

22.11.2025

H**S

18.09.2018

N**L

3.04.2019

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€ 106.11

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In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Croatia.

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