Hahnemühle Harmony Watercolor Block: 140 lb, 12 Sheets
The Hahnemühle Harmony watercolor block is a pad of 12 sheets of 140 lb (300 g/m²) natural white watercolor paper, glued on all four sides so it stays flat while wet. Hahnemühle surface-sizes it and sells cold-press, rough and hot-press finishes; US blocks run from 7 × 10 to 12 × 16 in. It is made in Germany.
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Product facts
- Product
- Hahnemühle Harmony Watercolor Block, 9 x 12 in, Cold Press, 140 lb (300 gsm), 12 sheets
- Brand
- Hahnemühle
- Brand origin
- Germany
- Made in
- Germany*
- Material
- 300 g/m² (140 lb) alpha-cellulose watercolor paper, surface sized, natural white, cold press, glued on four sides
- Price range
- $$$5–20 per ream or pad
Notes on these facts
- Made by Hahnemühle (Lower Saxony, Germany). Made in Germany: St. Louis Art Supply's Harmony block page says "Made in Germany" and gives Germany as the country of origin. Hahnemühle's German Harmony page doesn't state the country; its history page places the company's mill in the Solling hills of southern Lower Saxony since 1584. Source. Price: example listing.
- Price bands are typical US retail, checked October 2026.
Key takeaways
- Every Harmony block holds 12 sheets of 300 g/m² (140 lb) paper, in Hahnemühle's German list and at Blick.
- Blick sells four US sizes, 7 × 10, 9 × 12, 10 × 14 and 12 × 16 in; Hahnemühle's German site lists A4, A3, 24 × 30, 30 × 40 and 40 × 50 cm blocks.
- Hahnemühle's German site calls the paper surface-sized, acid-free, lightfast and highly age-resistant, in matt, rough and satin (hot-press) finishes.
- St. Louis Art Supply describes it as alpha-cellulose paper glued on all four sides and made in Germany.
- Hahnemühle says it was founded as a paper mill in 1584 in the Solling hills of southern Lower Saxony.
What is the Hahnemühle Harmony block?
It is a block of 12 sheets of 300 g/m² (140 lb) watercolor paper, glued on all four sides so each sheet stays flat while you paint. Hahnemühle, the German paper maker, calls Harmony “the naturally white paper for all wet techniques”.
Hahnemühle’s German site says the paper is sized on the surface, so colors sit on top and stay bright, wet paint can be corrected and lifted, and masking fluid comes off without residue. It sells Harmony in matt (cold press), rough and satin (hot press) finishes.
Hahnemühle Harmony block specs
| Spec | 9 × 12 in cold-press block |
|---|---|
| Size | 9 × 12 in (229 × 305 mm) |
| Sheets | 12 |
| Weight | 300 g/m² (140 lb) |
| Fiber | Alpha cellulose (St. Louis Art Supply) |
| Sizing | Surface sized |
| Surface | Cold press (matt); rough and hot press also sold |
| Color | Natural white |
| Archival | Acid-free, lightfast, highly age-resistant |
| Binding | Glued on four sides |
| UPC | 4011367106430 |
| Made in | Germany |
Weight, sizing, finishes and archival claims come from Hahnemühle’s German site; size, sheets and UPC from Blick; fiber, four-sided gluing and origin from St. Louis Art Supply.
What sizes are there?
US shops sell inch sizes, and Hahnemühle’s German list uses metric ones; every block has 12 sheets.
| US size (Blick) | cm | Sheets |
|---|---|---|
| 7 × 10 in | 17.8 × 25.4 | 12 |
| 9 × 12 in | 22.9 × 30.5 | 12 |
| 10 × 14 in | 25.4 × 35.6 | 12 |
| 12 × 16 in | 30.5 × 40.6 | 12 |
| German list (matt) | Inches | Order no. |
|---|---|---|
| DIN A4, 21 × 29.7 cm | 8.3 × 11.7 | 10628040 |
| 24 × 30 cm | 9.4 × 11.8 | 10628044 |
| 30 × 40 cm | 11.8 × 15.7 | 10628045 |
| 40 × 50 cm | 15.7 × 19.7 | 10628046 |
Hahnemühle also lists A3 blocks, spiral-bound A4 and A3 pads and a pack of ten 8 × 10.5 cm mini blocks. Rough and satin blocks come in most of the same sizes.
How do you use a watercolor block?
Paint on the top sheet while it is still glued down, let it dry, then free it with a knife slid into the small unglued gap in the edge. St. Louis Art Supply notes that the four glued sides keep the sheet from warping while wet.
Taking the sheet off wet risks tearing it and lets it cockle as it dries. The next sheet is already glued in place underneath.
How does Harmony compare to other 140 lb papers?
Harmony costs about the same as a student pad but comes as a block, while cotton blocks such as Arches cost much more.
| Hahnemühle Harmony block | Arches block | Canson Montval pad | Fabriano Studio pad | |
|---|---|---|---|---|
| Weight | 140 lb (300 g/m²) | 140 lb (300 g/m²) | 140 lb (300 g/m²) | 140 lb (300 g/m²) |
| Fiber | Alpha cellulose | 100% cotton | Not stated | 25% cotton |
| Format | Block, glued 4 sides | Block, glued 4 sides | Pad, tape bound | Pad, glue bound |
| Sheets (9 × 12 in) | 12 | 20 | 12 | 12 or 50 |
| Price band | $$ | $$$ | $$ | $$ |
Figures for the other papers come from our guides to them. St. Louis Art Supply suggests cellulose sheets like Harmony for pen-and-paint, repeated lifting and heavy erasing, and softer cotton papers for those who want more absorbency.
How much does it cost?
The 9 × 12 in cold-press block sits in our $$ band ($5–20 per block) at the US stores we checked in October 2026. Larger blocks cost more; the 100% cotton Arches block sits a band higher, in $$$.
Who makes Harmony, and where is it made?
Hahnemühle, a German paper maker, makes it, and St. Louis Art Supply lists the block as made in Germany. Hahnemühle says it was founded as a paper mill in 1584 in the Solling hills of southern Lower Saxony, where papermaker Merten Spieß built the first mill.
Frequently asked questions
Is Hahnemühle Harmony cotton paper?
No. St. Louis Art Supply describes Harmony as alpha-cellulose paper and points to Hahnemühle's Turner and Collection blocks for cotton. Hahnemühle's own Harmony page doesn't state the fiber.
How many sheets are in a Hahnemühle Harmony block?
Twelve. Hahnemühle's German site lists 12 sheets for every Harmony block size, and Blick's US blocks also hold 12.
What sizes does the Harmony block come in?
In the US, Blick sells 7 × 10, 9 × 12, 10 × 14 and 12 × 16 in. Hahnemühle's German list has A4, A3, 24 × 30, 30 × 40 and 40 × 50 cm blocks, plus a pack of ten mini blocks of 8 × 10.5 cm.
How do you remove a sheet from a watercolor block?
Let the painting dry, slide a palette knife or thin ruler into the small unglued gap in the edge, and run it round all four sides. St. Louis Art Supply gives the same steps.
Is Hahnemühle Harmony good for masking fluid?
Hahnemühle says masking fluid and rubber cement can be removed without residue, even after a long time, because the surface is sized. We haven't tested that yet.
Is Harmony acid-free?
Yes. Hahnemühle's German site calls it acid-free, lightfast and highly age-resistant, and Blick repeats acid-free and lightfast.
Where is Hahnemühle paper made?
St. Louis Art Supply lists the Harmony block as made in Germany. Hahnemühle says it was founded as a paper mill in 1584 in the Solling hills of southern Lower Saxony.
Sources
- Hahnemühle (Germany): Harmony & Expression Watercolour (read in full: Harmony 300 g/m², matt, rough and satin, surface sized, acid-free, lightfast, age-resistant; blocks of 12 sheets, A4 10628040, A3, spiral, 24 x 30, 30 x 40, 40 x 50 cm, 8 x 10.5 cm minis; sheets and rolls)
- Hahnemühle (Germany): Über uns (paper mill founded 1584 in the Solling, southern Lower Saxony)
- Hahnemühle (Germany): 440 Jahre Hahnemühle (1584, papermaker Merten Spieß builds the mill)
- Dick Blick: Hahnemühle Harmony Watercolor Block, 9 x 12 in, cold press, 12 sheets, 140 lb (read in full: item 09708-1912, glue-bound, UPC 4011367106430)
- Dick Blick: Hahnemühle Harmony Watercolor Blocks (read in full: 7 x 10, 9 x 12, 10 x 14 and 12 x 16 in, 12 sheets, 140 lb / 300 gsm; surface sized, acid-free, lightfast)
- St. Louis Art Supply: Hahnemühle Harmony Watercolor Block, Rough (read in full: alpha cellulose, surface sizing, glued on all four sides, 300 gsm, 12 sheets, made in Germany)
- Walmart: Hahnemühle Harmony Watercolor Block, rough, 7 x 10 in, 12 sheets