Box of 500 (6&rdquo; x 9&rdquo;) 6x9 28# White Booklet Envelopes for Wedding Shower Announcement Photo 6x9 Size Booklet Envelope (6x9) Square Flap White Inkjet & Laser Compatible Booklet Style 28lb bond / 70lb text (105 gsm) Paper Stock Moisture / Gummed Seal Box of 500 Made in the USA