Folds and layers
What may fit after a named fold
It is primarily a card and announcement format. When using folded material, measure the finished piece rather than assuming that an A-series paper name implies compatibility.
US announcement · United States
A6 announcement envelope size
4 3/4 × 6 1/2 in · converted: 120.65 × 165.1 mm
Exact decimal notation: 4.75 × 6.5 in decimal.
US A6 announcement is a 4 3/4 × 6 1/2 inch envelope name. It is not ISO A6 paper and is not the same rectangle as a C6 envelope.
- Native dimensions
- 4 3/4 × 6 1/2 in
- Decimal inches
- 4.75 × 6.5 in decimal
- Converted display
- 120.65 × 165.1 mm
- Opening
- open side
- Aliases
- US A6 envelope, A6 invitation envelope
What commonly fits flat
Start with the finished insert
A common 4 1/2 × 6 1/4 inch card leaves a nominal total difference of 1/4 inch in each dimension before seams, lining and stock thickness.
- 4 1/2 × 6 1/4 inch card
Nominal exterior size ≠ usable interior space
Seams, lining, stock thickness, contents and manufacturing tolerance can reduce practical room. Confirm the manufactured envelope and sample before bulk use.
Decision
When to choose A6 announcement
Choose US A6 for a suitably sized US card workflow. Choose C6 for ISO A6 paper or A-series folds, and label the system explicitly when ordering.
Nearest useful alternative
A6 announcement compared with C6
C6 is 114 × 162 mm; US A6 announcement is about 120.65 × 165.1 mm. The naming conflict is more important than their visual similarity.
The overlay is proportional to the canonical nominal dimensions. It compares the face rectangles only; it does not claim equal construction, internal capacity or postal treatment.
Clearance and tolerance
Why a positive number can still be too tight
Matcher clearance is applied per edge. Its “remaining” value is the total unused width and height after that allowance. A technically passing result with less than 2 mm remaining on either final dimension is labelled borderline and is never ranked as an ordinary recommendation.
Standards and rights note
US announcement name. It is not ISO A6 paper and is not the same size as a C6 envelope.
Minimum factual dimensions independently recorded from trade and manufacturer material. Source presentation, prose, diagrams, marks and dielines are not reproduced.