What size envelope do I need for a 4x6 card?

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Tags

1. #photo
2. #envelope
3. #suitable
4. #sized
5. #measuring
6. #featuring
7. #cards
8. #classic
9. #social
10. #square
11. #inches
12. #perfectly
13. #invitational
14. #purposes
15. #photographs
16. #perfect