This 50-pack of 20 x 24" Acid-Free Card Stock from Archival Methods is designed to have many uses. The card stock can act as a support, and prevent photographs or documents from bending inside of archival pages or sleeves. Photographs or documents can be mounted onto the stock and used as an album page. The stock can be used as a backing for a photograph inside of a frame. Instead of marking a matted print, you can write on the card stock, for information or easy identification of a print.

The white card stock is made out of alpha-cellulose pulp from purified wood fiber. No dyes, non-bleeding, and no alum were used in the manufacturing process. A lignin- and acid-free stock, it is pH-balanced at 9. Alkaline sizing was used internally and externally on the card stock, which has passed the Photographic Activity Test (PAT), confirming it is suitable for long-term storage. The weight of the card stock is 290 gsm.

Made from Alpha-Cellulose Pulp    Acid- and Lignin-Free    290 GSM Paper Weight    Easy-Folding Paper    Can Be Written On    Mount Documents & Photos    Support for Sleeves or Sheet Protectors    Archival Backing for Picture Framing

Made from alpha-cellulose pulp

Acid- and lignin-free

Buffered with calcium carbonate 2 to 3% alkaline reserve

290 GSM paper weight

Paper pH of 9

Related Questions and Answers

Q: 1. Does this paper pass the ANSI IT9.16 Photographic Activity Test (PAT)?

A: Unfortunately, the manufacturer does not specify whether this item pass the listed test.

Q: 2. 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: 3. Has anyone shipped prints of sizes less than 20x24? I need to ship 20x24 and 18x24 prints and wondering if smaller prints will move around in shipping and cause damage.

A: There is no built in way to secure the prints in the box. You would need to wrap them and fill up the box to prevent the prints from moving. It is a great case.

Q: 4. Are these slide storage sleeves transparent or opaque? ie can I see the slide when it is inside the sleeve.

A: The pages are transparent.

Q: 5. is this the same thickness as "oak-tag"? Is it thinner than 1/8" mat board?

A: Archival Methods Acid-Free Card Stock (24 x 36", 50-Pack, White) is 290gsm 14 point card stock (similar to a standard postcard). It is much thinner than the 1/8 inch mat board.

Q: 6. Specs say, "Retractable carry handle folds flat when the case is shipped." It's been delivered to me and the handle doesn't look at all retractable to me. How does it retract? I don't want it to break off during shipping.

A: The handle pushes down flat as shown in the 2nd photo.

Q: 7. How do you mount a document on this card stock?

A: If you are looking for ways to mount an image to the Archival Methods Acid-Free Card Stock, a few options I would recommend would be either the Pioneer Photo Albums SGS Square Dual Edge Photo Glue Stick (0.7 oz), B&H # PISGS, the Pioneer Photo Albums Photo Memory Fix (Permanent), B&H # PIPMFP, the Pioneer Photo Albums Photo Memory Fix (Removable), B&H # PIPMFR, the Pioneer Photo Albums Photo Mounting Corners (Box of 250, Clear), B&H # PIPC, or the Lineco Self-Adhesive 0.5 Photo Corners (Ivory, Pack of 252), B&H # LIPCPSI.

Q: 8. Is this product suitable to mount unframed photos on the wall? Flatness, warping, stability?

A: This product is suitable for mounting unframed photos to a wall. They are generally very stable and remain flat within optimal conditions.

Q: 9. Can windows be custom-sized?

A: Stating the obvious, these are precut windows but I suppose you could cut larger windows. Other than that, you could probably contact Archival Methods to see about custom frames.

Q: 10. how many 5x7 prints could fit in one envelope?

A: 14 fit nicely but you can put more. I only had 14 pieces of 5x7 prints. I personally put only a few per envelop though