shipping at Additional Charge to ALASKA HAWAII , PUERTO RICO OTHER EMIRATE 50 Pcs -20 x 24 Archival Storage Envelope ACTUAL SIZE 20 7/16" x 24 1/4" Plus Flap Cellophane Archival Quality Acid Free Resealable Envelopes ADJUST THE LENGTH USING THE FLAP TO 24 23 22 21 20 19 18 17 16 15 14 13 12 INCHES PROTECT YOUR LARGE COLLECTIBLE NEWSPAPERS ACID FREE = QUALITY STORAGE FOR YOUR LARGE NEWSPAPER 's LARGE MAGAZINES OR OTHER COLLECTIBLES Shipping Included in Price to Continental 48 United States SELECT USPS PRIORITY MAIL SHIPPING ONLY at Additional cost for shipping to Alaska , Hawaii and US Territories , Puerto Rico , 50 Pcs -20 x 24 ACTUAL SIZE 20 7/16" x 24 1/4" + Flap Holds 20 x 24 items UP TO 5/16 inch THICK PLEASE ALLOW SPACE FOR THICKNESS ADJUST THE LENGTH USING THE FLAP TO 24 23 22 21 20 19 18 17 16 15 14 13 12 INCHES 1.6 MIL THICKNESS 40 micron Cellophane Envelope Bag Sleeves " RESEALABLE ENVELOPES " Crystal clear with resealable self adhesive sealing strip that protects the contents from dust, bugs, moisture, and mildew. 1.6 mil ( 40 micron) thinkness archival quality. all returns are subject to a 20% return / restock / handling charge , any return will also forfeit any multiple item discount for other item purchased at the same time when applicable envelope , bag , sleeve , flap seal , acid free , lignin free crystal clear 75 sizes in stock ready to ship , over 200 sizes available ECONOMY SHIPPING AVAILABLE TO 48 CONTINENTAL STATES ADDITIONAL CHARGES APPLY TO PUERTO RICO ADDITIONAL CHARGES APPLY TO ALASKA HAWAII AND TERRITORIES - PUERTO RICO SELECT USPS PRIORITY MAIL SHIPPING ONLY at Additional cost for shipping to Alaska , Hawaii and US Territories , Puerto Rico Features Benefits: Crystal Clear Flap Seal Envelopes have the following features: Crystal Clear Optical Clarity High quality material will not easily rip, tear, wrinkle, or fog Resealable adhesive strip on the flap of the bags (allows you to customize the fit) with the exception to the Protective Seal where the seal is on the body of the Envelope which leave little for adjustment Fast insertion and sealing Acid and lignin free Archival safe 1.6 Mil / 40 micron thick USPS approved Made with 10% recycled content Acid Free , Lignin Free , 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. AVAILABLE IN SIZES UP TO 60 " X 40 " 1.6mil (40 micron) thinkness archival quality. 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 ServiceBuyers with - 0 - feedback and less than 1 year will not be eligible to purchase and may be refunded shipping at Additional Charge to ALASKA HAWAII , PUERTO RICO OTHER EMIRATE