Verify your card is 5x7 inches. If it's any larger, an A7 will be too tight.
The clock was ticking. I had fifty hand-lettered invitations and exactly zero envelopes to put them in. A7 envelopes—the standard 5.25" x 7.25" size for 5x7 cards—are a staple, but finding them in person can be a scavenger hunt. where to buy a7 envelopes in store
Ask the associate if they have "5-and-a-quarter by 7-and-a-quarter invitation envelopes." Verify your card is 5x7 inches
Usually the most reliable. Check the "Mailing & Shipping" aisle for 50-count packs. where to buy a7 envelopes in store
Check the stationery and paper-crafting departments.
The gold standard. They carry dozens of colors and textures in A7.