Amazon.com : 50 White A4 4x6 Photo Envelopes SELF SEAL - Fits 4 x 6 Photos, Invitations, Strong SELF-SEAL Closure, Size 4.5 x 6.25 Inch, 24lb, White, 50 Pack (36050) : Office Products
Amazon.com : A6 Kraft Paper Invitation Envelopes 4x6 for Baby Shower Announcements, Birthday Parties, Wedding, V-Flap Brown Envelopes for Office Supplies, Stationery (50-Pack) : Office Products
Best Paper Greetings 50 Pack Black 4x6 Envelopes With Gold Lining For Birthday Greeting Cards, Wedding Invitations, Self-adhesive Peel And Stick, A6 : Target
200-Pack Brown Kraft Envelopes, Perfect for 4 x 6 Cards, 120 GSM Thick, Bulk Value Pack, for Greeting Cards, Invitations, Annoucements, 4.2 x 6.2 inches - Walmart.com
4x6 Envelopes For Invitation,A6 envelope 4.75 x 6.5 inch, 4X6 Envelopes for | eBay