Editing Paper size (section)

===F4<span class="anchor" id="Paper size F4"></span>===
{{see also|Foolscap folio#F4}}

{| class="wikitable floatright"
|+ Hypothetical F4-based series
|-
! Name
! mm × mm !! inch × inch !!title="Aspect ratio"| AR
|-
! F0
| {{size|841|1321|p=8|ar=on}}
|-
! F1
| {{size|660|841|p=8|ar=on}}
|-
! F2
| {{size|420|660|p=8|ar=on}}
|-
! F3
| {{size|330|420|p=8|ar=on}}
|- style="font-weight: bolder"|
! F4
| {{size|210|330|p=8|ar=on}}
|-
! F5
| {{size|165|210|p=8|ar=on}}
|-
! F6
| {{size|105|165|p=8|ar=on}}
|-
! F7
| {{size|82|105|p=8|ar=on}}
|-
! F8
| {{size|52|82|p=8|ar=on}}
|-
! F9
| {{size|41|52|p=8|ar=on}}
|-
! F10
| {{size|26|41|p=8|ar=on}}
|}
A non-standard '''F4''' paper size is common in Southeast Asia. It is a transitional size with the shorter side of ISO A4 (210&nbsp;mm, {{frac|8|1|4}} inch) and the longer side of British ''Foolscap'' ({{convert|13|in|mm|adj=on}}. ISO A4 is exactly 90% the height of F4.
This size is sometimes also known as [[#Foolscap|(metric) 'foolscap' or 'folio']].

In Indonesia, where F4 is the legally-mandated paper size for use in the printing of [[law of Indonesia|national legislation]], it is sometimes called ''Folio'' or ''HVS'' (from {{langx|nl|houtvrij schrijfpapier}}, "[[wood-free paper|wood-free]] writing paper"). 
In Philippines, it is commonly called ''long bond'' as opposed to ''short bond'' which refers to the US Letter paper size.

A sheet of F4 can be cut from a sheet of SRA4 with very little wastage. The size is also smaller than its [[#Swedish extensions|Swedish equivalent]] SIS F4 at 239&nbsp;mm × 338&nbsp;mm.

In some countries, the narrow side of F4 is slightly broader: 8.5 inches (216 mm) or 215 mm. It is then equivalent to<!--one variant of--> the US ''Government Legal'' and ''Foolscap Folio'' sizes.
In India, an amendment to the national standard IS 1064 from 2022<ref name="IS 1064 Amd 2 2022">{{cite web| url= https://archive.org/stream/gov.in.is.1064.1980/zIS1064Amd.2%3A2022_djvu.txt | title=IS 1064 (Second Revision)| date=1980}}</ref> records two metricated, originally inch-based sizes: '''FS''' at {{convert|215|×|345|mm|inch|2|abbr=on}} and ''Legal'' with the same width and a height of either {{convert|335|mm|in}} or {{convert|355|mm|in}}, i.e. 1 cm less or more than FS. Due to their predominant use, printer manufacturers and vendors have dubbed these sizes ''Indian Legal'' or ''Legal (India)''.<ref name="brother">{{cite web|url=https://support.brother.com/g/b/sp/faqend.aspx?c=us&lang=en&prod=mfcj5945dw_us_eu_as&faqid=faq00100517_503| publisher =Brother | title =Paper Type and Size for Each Operation}}</ref><!--replace by IPP source when standardized, expected in mid-2025-->
In Mexico, the length of a similar size, likewise known as ''Mexican Legal'' or ''Legal (Mexico)'', has been rounded to 340 mm.<ref name="brother"/>