4.25 x 5.5 Blank White Greeting Cards & A2 Envelopes - Bulk Set of 100 | eBay
A7.5 Envelopes | 5.5" x 7.5"
CH Heywood® Square Envelope 28 lb. White Wove 5.5 x 5.5 in. Square Envelopes 500
Self-Adhesive Packing List Envelope, Top-Print Front: Packing List/Invoice Enclosed, 4.5 x 5.5, Clear/Orange, 1,000/Carton - BOSS Office and Computer Products
Bright White 5.5 Square Envelopes — Fourteen-Forty: Custom Wedding Invitations
Cougar Opaque - OUTER Envelopes (5.5 x 7.75) - WHITE - (Outer/Gummed) - 25
Limited Papers (TM) 5.5"x5.5" Square Invitation Envelope - 28# White Announcement Envelope Series (1000) : Office Products - Amazon.com
5.5 Bar Pointed Flap Envelopes (4 3/8 x 5 1/2) – Donahue Paper Emporium