9 x 12 Booklet Envelope - Open Side - 24# White (9 x 12) - Jumbo Series (Box of 1000) A Quantity of 1000 - 9 x 12 Booklet Envelope - 24# White 24# White Wove Paper - Regular Gummed Flap Great for mailing invoices, statements, catalogs or announcements. This envelope may be sourced from any one of a number of top brands. Ships via UPS Ground