Export a PDF to these settings:

Specification: NewspaperAds_1v4_fault_truetype (by GWG)

PDF Standard: PDF/X-1a:2001

Convert to CMYK using these settings:

Profile: ISOnewspaper26v4 [download] (IFRA26 Max TAC 240)

This section is for fixed, uncommon sizes used in our display newsprint pages across various publications. If you can't find the size you need please contact our copy team on 020 3353 2191/4104 or at: colour.operations@guardian.co.uk

The specifications contained in this section are for Display (Run Of Paper) advertising only, for the Guardian and Observer newsprint sections.

For a list of approved repro houses, Bureaus and advertising delivery methods please see the links below:

Delivery Methods: http://www.guardian.co.uk/advertising/electronic-ad-delivery

Approved Senders: http://specle.net/uk/guardian-news-media/approved-repros-bureaus

For some general guidelines to designing your ad to make it suitable for print, please see this link: http://specle.net/uk/guardian-news-media/print-guidelines-for-guardian-observer

WE DO NOT accept emailed advertising of any type. You must use one of our approved delivery methods.

We never accept any advertising copy with crop marks, colour bars or other printers marks of any description. Advertising should be supplied to exact dimensions only.