This pale blue-gray 10-pack of Lineco 16x20" Single Wall Corrugated Boards 10-Packfrom Lineco 16x20" Single Wall Corrugated Boards 10-Packcan be used for print backers, picture framing, boxmaking, as dividers, or in any other application requiring a light, sturdy board. Each board is 0.125" thick, and made of bleached virgin fibers which are acid and lignin free.

Lineco employs alkaline buffering in their manufacturing processes to improve archival protection from acidic contamination. This buffering is accomplished with a 3% calcium carbonate reserve infused in all three layers.

Use for Print Backers & Picture Framing    Suitable for Boxmaking & Dividers    Smooth and Lightweight    0.125" Thick    Acid and Lignin Free    Alkaline Buffered / 3% Carbonate    Made of Bleached Virgin Fibers

Related Questions and Answers

Q: 1. Is the opening on the long side or short side?

A: The opening on the Lineco Glassine Envelopes (4.25 x 5.25", 100-Pack) runs across the horizontal measurement of the 5.25" side.

Q: 2. What is the depth of the 16 x 20 tray?

A: It's 2.5 inches. That dimension should have been included in the item description.

Q: 3. Do these come uncut?

A: Yes Lineco Conservation Mat Board (32 x 40", White, 10-Pack) is uncut mounting board.

Q: 4. how many mm between the 4 mounting screws ? I ask because when drilling holes in a brick wall it might be too close to the edge.

A: The manufacture does not provide the mounting hole distance for the Sonos Era 300 Wall Mount (Single, White) BH #SOERA300MW. However it is recommended that it is made to be installed to a stud.

Q: 5. Is board acid free?

A: No, the Lineco Conservation Mat Boards are not acid-free. However, the boards have a high alpha-cellulose conservation core and have been buffered with 3% calcium carbonate, which will protect against acid migration.

Q: 6. There are two sides of adhesive - does it stick to the mat and mat board?

A: You apply these strips to a backing board with their adhesive tape -- for your purposes the adhesive tape is 1-sided, being already attached to the firm plastic strip.The adhesive doesn't cover the full width of the plastic strip; it leaves perhaps 1/5 of plastic free to act as a trap for the item being mounted. There is no adhesive in direct contact with the mounted item's surface.This is ideal for use on a backing board where glass and/or matting will keep the artwork from falling out of the strip's thin rim of plastic. It wouldn't work for a large paper item which lacked a glass in front -- the paper's weight would pull it out of plastic edges, I suspect. The role of this is to prevent artwork from shifting around after it matted and framed.Note that the adhesive holding the mounting strip is outside the dimensions of the artwork: the backing board needs to be around an inch wider than the artwork to have room for the strips.

Q: 7. What are the outer dimensions of the tray- specifically length and width?

A: The product dimensions are as follows 18.39 x 22.48 x 4.17 inches

Q: 8. Does the mentioned plastic strip go under or over the photo print? I have used positionable mounting adhesive in the past, are ?

A: When using the Lineco "See Thru" Mounting Strips, the plastic strips will go above, below, and on the sides of the photo print in order to cradle it so it is ready to be framed.

Q: 9. What does the empty tray weigh?

A: The empty Paterson Plastic Developing Tray for 16x20" Prints weighs approximately 1.85 lbs (0.84 kg).

Q: 10. Are these mats pre-cut? I'm looking for uncut mats

A: No these are not pre-cut meaning they do not have a window for a print. This is a pack of mat boards cut to fit 8 x 10 frames so those are the outer dimensions of the mat sheet itself and you can cut whatever size opening you need for prints if desired.