60 X 40 ARCHIVAL STORAGE DISPLAY ACID FREE CELLOPHANE ENVELOPE , 39 , 38 , 37 , 36 , 35 , 34 , 33 , 32 , 31 , 30 , 29 , 28 , 27 , 26 , 25 , 24 , 23 , 22 , 21 INCHES USE FLAP TO ADJUST HEIGHT Cellophane Archival Quality Acid Free FLAT Envelopes 20 Pcs 60 7/16 X 40 1/4 ACTUAL SIZE FLAP WITH SEALING TAPE ON FLAP Bag sizes indicates the opening side as the first dimension NEWSPAPERS SHOWN MEASURE 11 X 22 INCHES EACH USED FOR SIZE COMPARISON AND ARE NOT INCLUDED USE FLAP TO ADJUST HEIGHT FROM 40 , TO 39 , 38 , 37 , 36 , 35 , 34 , 33 , 32 , 31 , 30 , 29 , 28 , 27 , 26 , 25 , 24 , 23 , 22 , 21 INCHES SMALLER LARGER QUANTITY PRICES ON REQUEST CANADIAN BUYERS - THIS CAN SHIP VIA POST - SEND ME A MESSAGE WITH YOUR POST CODE FOR CURRENT SHIPPING COST VIA USPS INTERNATIONAL POST PROTECT , STORE OR DISPLAY YOUR ART PAINTINGS POSTERS PRINTS AND MORE ACID FREE = QUALITY STORAGE FOR YOUR LARGE ITEMS OR OTHER COLLECTIBLES 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 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