How much bigger should an envelope be than a card?

Related questions

1. How are carpets measured?
2. What is the formula of CFT?
3. What number is a 5x7 envelope?
4. What is wood CFT?
5. What is a standard carpet width?
6. How many square feet are in a feet?
7. What is the formula to convert mm to square feet?
8. What widths do Carpets come in UK?
9. What does 5x7 mean?
10. What is RFT unit?

Tags

1. #larger
2. #golden
3. #sloppy
4. #guideline
5. #wiggle
6. #plenty
7. #without
8. #invitation
9. #envelope
10. #choose
11. #largest
12. #perfect
13. #excessive
14. #allow
15. #presentation