Amazon.com : 6 x 9 Booklet Envelope - 24# White Wove - Open Side- (6 x 9) - Jumbo Envelope Series (Box of 500) : Office Products
No. 10 Side Seam Regular White Envelopes, 4-1/8" x 9-1/2", Signature Bond® 24-lb White Wove with Vellum Finish, SFI Certified - Box of 500 Envelopes - Walmart.com