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The National Archives logo

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Thick or over-sized files
files over 5 cm 
thick

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Any file over 5 cm thick

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must be split as it will be too unwieldy 
when accessed,

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and the file and or records would be easily 
damaged.

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To split the file,

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find a sensible place at which you can split 
the file

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into 2 or more similar thickness files.

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A sensible place is between 2 documents,

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rather than in the middle of a document.

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Remove the contents from the second half 
of the file,

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and put these into a new 4-flap folder.

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More details are given in the later section 
on 'Labelling split files'.

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To choose the correct length tag for the 
split files,

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refer to this table with the thickness of 
each file.

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This image indicates the excess tag length 
needed

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to ensure the file can be opened, and pages 
can be turned easily,

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without damaging either the file or the records.

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More details are given on tagging in a later 
video.

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A common question is whether files should 
be tied
with cotton or linen tape.

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Generally, we do not advise tying the file,

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but if you are unsure because of the contents,
check 
with your Transfer Adviser.