This pack of 14 x 18" Natural White 4-Ply Museum Board from Archival Methods contains 25 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. What happened to the Archival Methods Metal Frame Kits? They were the best!!

A: I'm sorry, we stock many varieties of metal frames, but we don't have Archival Methods metal frame kits.

Q: 2. do they come with a protective sleeve?

A: No they are just ready to frame.

Q: 3. Do these frames come with a mat?

A: No. On their product page, they recommend you purchase their Mat and Presentation Kit (ie. BH# AR111481079).

Q: 4. What size is this product 48-019? Title says for 13x19" print, but window says 11.9x17.9 for 12x18" print?

A: 11.9 x 17.9" (30.2 x 45.5 cm) is the window opening. This will allow for a boarder if you are working with 13x19 paper. If you make the print a 12x18 (on a 13x19 paper) the window opening will not take much off the print.

Q: 5. Are the mounting corners included with this product for mounting the prints on the board?

A: Mounting corners are not included. Look for acid-free mounting corners or linen hinging tape--Lineco is a brand I can recommend that is available from B&H.

Q: 6. What size are they exactly? What needs “trimmed”?

A: The index cards are 5" x 7 3/8". These cards are scored at one side and the bottom to be easily trimmed for use in smaller-size boxes. When the cards are trimmed, the size is 4 3/8" X 6 3/8"

Q: 7. Regarding Archival Methods Bright White Pre-Cut Exhibition Mat (18 x 24 for 12 x 18 Print, 5-Pack) B&H # ARPM12181824 MFR # 48-018...I'm purchasing this for a 12x18 image, but I would prefer to have an opening of 11.5 x 17.5...I'm afraid that the actual opening of the board would cut off the corners of the composition that is vital...?

A: I have purchased these mats and have been satisfied. The openings are close to 11.5 x 17.5 . Maybe slightly smaller because of the bevel cut. The one I measured was off by less than 1/8 on either dimension.

Q: 8. Hello, is the backing board made from 100% cotton? Thanks.

A: Yes its 100% cotton.

Q: 9. What is the precise opening size (e.g., 16.5x10.5, or 16x10)?

A: Please disregard-- found it in the specs.

Q: 10. Is there acid in these boards? If there is, how much of a concern is that to the longevity of a photo attached to it? thanks!

A: The Archival Methods Bright White Pre-Cut Exhibition Mat (11 x 14" Board for 8.5 x 11" Print, 5-Pack) is archival material. The mat is made of 100% cotton fiber that is acid- and lignin-free, and incorporates alkaline or neutral sizing, and the linen tape is a pH-neutral water-activated adhesive.