I have found a product that works very well to house Large USPS "Special Use Envelopes",such as
Pre-paid Priority Mail Flat Rate and Pre-paid Express Mail Envelopes. It is made by Pioneer Pohoto Albums, Inc. - "Family Treasures Deluxe Easy Load Memory Book" –#
K-FTM-15. It is a well made scrapebook with heavy padded cloth covers with expanding wrap-around spine. Includes 10 pH neutral, polypropylene, top loading 12"x15" sheet protectors and 10 heavy weight white page inserts (20 sides). Archival and photo safe - acid, lignin and PVC-free. Reinforced screw post binding allows pages to lie flat and accepts unlimited 12x15 White Refill Pages or Black Refill Pages. Page Dimensions: 12" x 14-1/2" and uses their Refill sheets
RW-15 and comes in several colors including Hunter Green which is very close to Scott's green National & Specialty Albums. The large Special Use envelopes slide right inside each page without have to fold the envelope tab. You also need to order a couple extra packages of Pioneer Extra Long 3cm Extension Posts (3 sets) #
K-P-3B (helps everything fit better) and a couple sets of refills. The spin expansion design will allow many years of issued envelopes. The Scott labels match nicer in color than photo. Not at all expensive. Sold at
Amazon and other places- check internet for best prices including delivery.


