Some ask, "What about envelopes?" This is a very common question we get, so here is some information we thought you might find helpful. 5x7 Envelopes: If you purchased a 5x7 size invite or announcement you will want to purchase A7 Envelopes. A7 Envelopes measure 5.25" x 7.25" this gives you enough room to get the invitation in and out of the envelope without it being to tight. So, where are some locations to purchase these envelopes? Here are some excellent choices: w