shipping at Additional Charge to ALASKA HAWAII , PUERTO RICO OTHER EMIRATE MOVIE POSTER LOBBY CARD ACID FREE LIGNIN FREE - CELLOPHANE ENVELOPE CLEAR COLLECTOR DISPLAY ARCHIVAL STORAGE 24 X 36 ART PRINT POSTER LOBBY CARD PAINTING DOCUMENT 10 Pcs 24 7/16" x 36 1/4" + Flap, ACTUAL SIZE Crystal Clear Envelope FLAP SEAL ENVELOPE CAN ADJUST TO DESIRED LENGTH WITH FLAP TO 35 , 34 , 33 , 32 , 31 , 30 , 29 , 28 , 27 , 26 , 25 , 24 , 23 , 22 , 21 , 20 Clear Cellophane Archival Quality Acid Lignin Free FLAT Envelopes NEW FROM BULK STOCK Shipped in a corrugated tube mailer PROTECT YOUR LOBBY CARD MOVIE POSTER ART LARGE COLLECTIBLE POSTER PRINT NEWSPAPERS HOLDS FULL SHEET OPEN ACID FREE = QUALITY STORAGE FOR YOUR LARGE NEWSPAPER 's LARGE MAGAZINES OR OTHER COLLECTIBLES The protective closure feature ensures the adhesive will not come in contact with the contents of the bag when inserting or reusing the envelope . Adhesive strip is on the body of the envelope What It Means To Be Acid and Lignin Free Majority of Scrapbookers have heard the term ?acid and lignin free?, but what does this really mean, and why does it matter? Acid free materials have a pH balance of 7.0 or higher. The pH scale measures how acidic or basic a substance is. The scale runs from 0 to 14, with 7 being neutral. Anything with a pH less than 7 is considered acidic, and anything over 7 is considered basic. Lignin is a natural occurring bonding element in plants that holds the wood fiber together. While lignin is not an acid, it does give off acids as it deteriorates. Therefore if you have a paper that is only acid free, but still contains lignin, it will become acidic over time. So why does all this matter? Simply put, acid and lignin cause paper to deteriorate. A good example of this is newspaper. You will notice that after only a couple of days, newspaper begins to turn yellow and brittle. The same will happen to your scrapbook and photographs over time if the proper materials are not used. These materials do not only include paper? adhesives, pens, markers, stickers, and anything else that comes into contact with your photographs must be acid and lignin free. Do not automatically assume that because an item it purchased in the ?scrapbook? section that it is photo-safe. If it does not say ?photo safe?, ?acid-free? or ?archival safe?, assume that it is not. A pH pen can be purchased to test the acidity of a product if you are not sure. Our top selling Crystal Clear Flap Seal Bags are ideal for art, photo, stationery, bulk mail, craft hobby, and just about anything else. These bags have optimal clarity and durability. Adhesive strip is on the flap. USPS Approved. Details Crystal Clear Body Seal Bags have the following features: ? Crystal Clear Optical Clarity ? High quality material will not easily rip, tear, wrinkle, or fog ? Acid and Lignin Free ? Archival Safe ? USPS Approved ? 1.6 mil thickness ? Adhesive on the flap allows you to customize the fit ? 10% Recycled Content ? 1/16? size tolerance ? Bag sizes indicates the opening side as the first dimension IF YOU NEED HELP CHOOSING AN ARCHIVAL ENVELOPE SEND ME A MESSAGE WITH THE LENGTH WIDTH AND HEIGHT I WILL BE GLAD TO HELP 200 SIZES AVAILABLE AS LARGE AS 60 X 40 INCHES Clearest polypropylene envelopes Cellophane We sell Protect and show off your finest prints and photography. 100% blemish-free virgin polypropylene. Acid-free, archival safe. FDA compliant. MATERIAL: * BOPP (Bi-axially Oriented Polypropylene) FEATURES: * Acid free and archival safe. Country of Origin: USA FDA Compliant PLEASE ALLOW SPACE FOR THICKNESS We may use UPS , Fedex in place of Fedex UPS and USPS to Select Service areas at Our Discretion to improve Delivery Service ECONOMY SHIPPING TO 48 CONTINENTAL STATES shipping at Additional Charge to ALASKA HAWAII , PUERTO RICO OTHER EMIRATE