5 1/2 Square Invitation Envelope - 70# Text Brown Bag Kraft (5.5 x 5.5) - Square Announcement Series (Pkg of 50) A Quantity of 50 - 5 1/2 Sq Brown Bag Kraft Envelope 70# Brown Bag Kraft Paper - Standard Gummed Flap. The outside dimension of this envelope is 5 1/2 x 5 1/2. This envelope is meant for invitations or inserts that are 5 x 5 Square or smaller. Perfect for Greeting cards, Weddings or any announcement. This envelope may be sourced from any one of a number of top brands. Ships via First Class Mail