This pack of 22 x 28" Natural White 4-Ply Museum Board from Archival Methods contains 15 boards that are 1/16" thick. The boards are designed for matting, mounting and preservation of fine prints, precious documents, as well as for traditional and digital photography. The 4-ply thickness is ideal for window mats and mat backing for small prints, creates a separation between artwork and glazing, and provides a flat, supportive backing.

The boards are acid and lignin-free and use alkaline or neutral sizing. No brightening agents are used and no yellow cast is present. All boards are buffered with calcium carbonate to ensure that a polluted environment won't cause paper's pH value to decrease with age.

Thickness 1/16"    100% Cotton Fiber (99% Alpha Cellulose)    Acid-Free    Archival Grade    Calcium Carbonate Buffered

Made from 100% Cotton fiber pulp (99% Alpha Cellulose) and does not contain any post consumer waste recycled pulp. The paper is free of metal particles, waxes, plasticizers and residual bleach peroxide. Sulfur content is less than 0.0008% reducible sulfur. Iron content does not exceed 150 ppm and copper does not exceed 6 ppm. No optical brightening agents are used in the pulp

Alkaline sizing is used for both internal and external sizing. No alum is used in the manufacturing process

Calcium carbonate buffered with 2 to 3% alkaline reserve

Acid-free (9.0 ± 0.5 pH level)

Light-fast and non-bleeding color dyes

Board passes the PAT (Photographic Activity Test) ISO 14523 (formerly ANSI IT9.16)

Lignin content is tested by TAPPI 236 cm-85 and has a Kappa number of less than five

Single ply sheets are laminated together using all natural starch adhesive

Related Questions and Answers

Q: 1. Is the surface smooth, like hot press, or slightly pebbly, like cold press?

A: These boards have a smooth surface.

Q: 2. Is the color bright white, normal white or is it a yellowish white?I'm required to get white acid free mounting board 4 ply 11x14 so I don't know if this will work for my darkroom black and white prints.Thanks!

A: I'd say it is a light cream white. It definitely fits some photos much better than the usual harsh gallery white.

Q: 3. How thick is this board exactly? I'm looking for something to dry mount ink jet photographs.

A: Hi Brittany -- I use this for mounting traditional photos. It is not rigid, it will bend, but it is solid enough to support your prints as long as you mat and frame them. I wouldn't use it for mounting prints without a mat.Hope this helps.Russ

Q: 4. Can you please tell me how thick this is?

A: This mat board is 2-Ply / 30 Pt. (approximately 1/32) thick.

Q: 5. What does 2 ply mean

A: it means thickness - the more plys the thicker and stronger (more firm) the matt - 2 ply is very good - 4 ply is better but a lot more expensive - never had an issue with 2 ply

Q: 6. Is it for printing right on board , or is it adhesive board?

A: Thank you.

Q: 7. Hi how many gsm is 2 ply and 4 ply?

A: 2-ply ≈ 260 g/m2 3-ply ≈ 390 g/m2 4-ply ≈ 520 g/m2

Q: 8. Do you sell any 52" mounting board?

A: The largest mounting board we sell is 40 x 60 x 3/16". https://www.bhphotovideo.com/c/product/1245123-REG/nielsen_bainbridge_cc4060_3c_clay_coated_foam_core.html

Q: 9. Hi how many gsm is this board?

A: 120 GSM.

Q: 10. How many sheets in the box?

A: 25 sheets are included in one box.