Question
What envelope size do I need for a 4.25 x 5.5 inch RSVP card?
Answer
A 4.25" x 5.5" RSVP card pairs with an A2 envelope, which measures 4.375" x 5.75". That gives about 0.125" of clearance on each side.
- Card: 4.25" x 5.5"
- Envelope (A2): 4.375" x 5.75"
- Clearance: about 0.125" per side, so the card slides in and out smoothly.
That small gap is intentional - it keeps the card easy to handle without letting it rattle around inside.
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