Editing Paper size (section)

=== International envelope and insert sizes ===
{{main|Envelope#Sizes}}

{| class="wikitable"
|+ Common folded or cut sizes of ISO paper: stripe formats and inserts
|-
! Name
! mm × mm !! inch × inch !!title="aspect ratio"| AR
! Notes
|-
! {{frac|3}}A4
| {{size|99|210|ar=on}}
| common flyer or stripe size
|-
! ''unnamed''
| {{size|105|210|ar=on}}
| standard folded size of German letters
|}

[[File:DIN_5008,_Form_A.svg|thumb|DIN 5008 Form A]]
DIN 5008 (previously DIN 676) prescribes, among many other things, two variants, A and B, for the location of the address field on the first page of a business letter and how to fold the A4 sheet accordingly, so the only part visible of the main content is the subject line.

{| class="wikitable"
|+ Common envelopes for ISO paper, that are not simple C-series and B-series formats
|-
! Name
! mm × mm !! inch × inch !!title="aspect ratio"| AR
! Content
! Notes
|-
! DL
| {{size|110|220|ar=on}}
|rowspan=3| {{frac|3}}A4, DIN 5008 A and B
| ''Designated long'', "DIN lang" ([[Deutsches Institut für Normung|DIN]] long); sometimes erroneously instead called "DLE", apparently for ''envelope''; exactly matches Swedish SIS E6/E5 (E6: {{resx|110 mm|155 mm}}, E5: {{resx|155 mm|220 mm}}); envelope #5 in China, Chou/N 6 in Japan; fits well enclosed in C6/C5 for the purpose of e.g. reply mail
|-
! C6/C5
| {{size|114|229|ar=2}}
| Common edge of C6 and C5 is 161&nbsp;mm; also known as "Postfix", "DL+" or "DL Max", but those terms are not standardized
|-
! Italian 
| {{size|110|230|ar=2.1}}
| Centimetre-rounded C6/C5 or slightly wider DL
|-
! C7/C6 
| {{size|81|162|ar=on}}
| {{frac|3}}A5
| Common edge of C7 and C6 is 114&nbsp;mm 
|-
! B6/C4 
| {{size|125|324|ar=2.6}}
| 
| B6 is {{resx|125 mm|176 mm}}, C4 is {{resx|229 mm|324 mm}}
|-
! Invite
| {{size|220|220|ar=on}}
| Square card with edge of A4 and A5, 210&nbsp;mm
| 
|-
! DIN E4
| {{size|280|400|ar=on}}
| 
| Listed in DIN 476–2, but not part of a series proper; SIS E4 is {{resx|220 mm|310 mm}}
|}