Invitation sizes. Also on this page: envelope styles/sizes.
Envelope Size Cheat Sheet More
Making Envelopes http://thepapernestdolls.blogspot.sg/2013/05/making-envelopes.html
Card Sizes - if you ware making your own cards from scratch you will need to know this. I chose a small envelope (A2) but after mapping out my card and making the text readable I needed an A7! Now I know I need bigger envelopes and more paper.
Fantabulous Cricut Challenge Blog: Quick Tip Tuesday - how to cut cards & envelopes using Cricut
size of envelope | There is a world of envelopes to choose from, depending on the size ...
Formula for making your own envelopes for any size card.
DIY Cash Budget Envelopes: Free Printable | Learn how to create your own wallet-sized envelopes using any paper or scrapbook paper. | @thinkingcloset
Card sizes, paper full size folds into . . .
Box Buster. Use this online calculator to figure out how to use the EPB to create any size box.