Global Cargo Insight

Sources & Change Log

By Owen Hartley, Editor · Last updated November 11, 2026

Every number on this site comes from one of the documents below. This page is built from the same data files as the tables, so the list cannot fall out of date without the tables changing too.

Documents behind every table

Each row names a document, links to it, gives its publication or effective date when the document has one, and shows when we last checked our figures against it. Undated documents, such as carrier web pages, are marked "undated"; for those, the check date is the date the page said what our table says.

Documents behind the tables and text on this site
DocumentPublished or effectiveCheckedData files
NMFTA, Decoding Density: The Freight Factor You Can't Afford to Overlook (blog, posted June 19, 2025)Jul 19, 2025Oct 30, 2026nmfc_density_scale.csv
FedEx Freight, Understanding the upcoming NMFC classification changes beginning July 2025 (flyer, 05/25)undatedOct 30, 2026nmfc_density_scale.csv
Logistics Plus, note on NMFC density changes effective August 5, 2017Aug 5, 2017Oct 30, 2026nmfc_density_scale.csv
Transport Topics, FedEx Freight Delays Enforcement of NMFC Updates for 150 Days (July 23, 2025)undatedOct 30, 2026nmfc_density_scale.csv
NMFTA, 2025 NMFC Changes - Frequently Asked Questions (2024)undatedOct 30, 2026nmfc_density_scale.csv
GS1 Sweden, T2244 Platform type code list (codes 11, 12, 40, 41, 42, 43, 25)Dec 2003Oct 30, 2026pallet_standards.csv
WFP Logistics Cluster, Standard Pallet SpecificationsundatedOct 30, 2026pallet_standards.csv
European Pallet Association (EPAL), EPAL Euro Pallet (EPAL 1) specificationsApr 9, 2025Oct 30, 2026pallet_standards.csv, pallet_weights.csv
European Pallet Association (EPAL), EPAL 2 Pallet specificationsApr 9, 2025Oct 30, 2026pallet_standards.csv, pallet_weights.csv
Uline, New Wood GMA Pallet - 48 x 40" (H-1218) product pageundatedNov 10, 2026pallet_weights.csv
Uline, Recycled Wood Pallet - 48 x 40" (H-750) product pageundatedNov 10, 2026pallet_weights.csv
Uline, Block Pallet - 48 x 40" (H-4793) product pageundatedNov 10, 2026pallet_weights.csv
Uline, Pressed Wood Pallet - 48 x 40" (H-1032) product pageundatedNov 10, 2026pallet_weights.csv
Uline, Export Pallet - 48 x 40" (H-1449) product pageundatedNov 10, 2026pallet_weights.csv
Uline, Plastic Pallet - 48 x 40" (H-990) product pageundatedNov 10, 2026pallet_weights.csv
iGPS, Pallet Spec Sheet (igps.net)undatedNov 10, 2026pallet_weights.csv
Hapag-Lloyd, Container Specification (booklet, 03/2016), pp. 5, 9, 11, 13, 15, 41, 43Mar 2016Oct 30, 2026container_iso668.csv, container_specs.csv
Maersk, Our fleet - equipment specifications: dry containers (PDF, maersk.com local information)undatedOct 30, 2026container_specs.csv
Maersk, Our fleet - equipment specifications: reefer containers (PDF, maersk.com local information)undatedOct 30, 2026container_specs.csv
CMA CGM, Containers - technical specifications (web page)undatedOct 30, 2026container_specs.csv
ASEAN / FIATA training module, Chapter 5: Calculation of Air Freight (quotes IATA TACT Rules 3.9.4 and weight computation rules)undatedOct 30, 2026air_divisors.csv
FedEx, How do I calculate dimensional weight of a package? (customer support FAQ)undatedOct 30, 2026air_divisors.csv
DHL, Weight and Dimensions (DHL Express, discover.dhl.com, GB)undatedOct 30, 2026air_divisors.csv
UPS, Package Dimensions, Size Limits and Weight Guide (US support page)undatedOct 30, 2026air_divisors.csv
NMFTA, Docket 2026-3 To Be Released November 6 - Item 640 (blog, posted October 28, 2026)Jan 23, 2027Oct 30, 2026references.csv

Source: this site's data files, checked Nov 10, 2026

Which page uses which document

This table maps each page to the documents its tables and calculators rely on. If you find a figure that does not match its source, the page and document listed here are the place to start, and the editorial policy explains how to report it and what happens next.

Documents used by each page
PageDocuments
CBM Calculator: Cubic Meters & How Many Boxes Fit a ContainerMaersk, Our fleet - equipment specifications: dry containers (PDF, maersk.com local information)
Maersk, Our fleet - equipment specifications: reefer containers (PDF, maersk.com local information)
Hapag-Lloyd, Container Specification (booklet, 03/2016), pp. 9, 11, 13, 15, 41, 43
CMA CGM, Containers - technical specifications (web page)
Chargeable Weight Calculator: Air Freight (IATA & Express)ASEAN / FIATA training module, Chapter 5: Calculation of Air Freight (quotes IATA TACT Rules 3.9.4 and weight computation rules)
FedEx, How do I calculate dimensional weight of a package? (customer support FAQ)
DHL, Weight and Dimensions (DHL Express, discover.dhl.com, GB)
UPS, Package Dimensions, Size Limits and Weight Guide (US support page)
Freight Class Calculator (NMFC 2025 Density Scale)NMFTA, Decoding Density: The Freight Factor You Can't Afford to Overlook (blog, posted June 19, 2025)
FedEx Freight, Understanding the upcoming NMFC classification changes beginning July 2025 (flyer, 05/25)
Logistics Plus, note on NMFC density changes effective August 5, 2017
Transport Topics, FedEx Freight Delays Enforcement of NMFC Updates for 150 Days (July 23, 2025)
NMFTA, 2025 NMFC Changes - Frequently Asked Questions (2024)
NMFTA, Docket 2026-3 To Be Released November 6 - Item 640 (blog, posted October 28, 2026)
Freight Class Chart 2025: Old 11-Tier vs New 13-Tier ScaleNMFTA, Decoding Density: The Freight Factor You Can't Afford to Overlook (blog, posted June 19, 2025)
FedEx Freight, Understanding the upcoming NMFC classification changes beginning July 2025 (flyer, 05/25)
Logistics Plus, note on NMFC density changes effective August 5, 2017
Transport Topics, FedEx Freight Delays Enforcement of NMFC Updates for 150 Days (July 23, 2025)
NMFTA, 2025 NMFC Changes - Frequently Asked Questions (2024)
Standard Pallet Sizes, Dimensions & Weight (US, ISO, EUR)GS1 Sweden, T2244 Platform type code list (codes 11, 12, 40, 41, 42, 43, 25)
WFP Logistics Cluster, Standard Pallet Specifications
European Pallet Association (EPAL), EPAL Euro Pallet (EPAL 1) specifications
European Pallet Association (EPAL), EPAL 2 Pallet specifications
Uline, New Wood GMA Pallet - 48 x 40" (H-1218) product page
Uline, Recycled Wood Pallet - 48 x 40" (H-750) product page
Uline, Block Pallet - 48 x 40" (H-4793) product page
Uline, Pressed Wood Pallet - 48 x 40" (H-1032) product page
Uline, Export Pallet - 48 x 40" (H-1449) product page
Uline, Plastic Pallet - 48 x 40" (H-990) product page
iGPS, Pallet Spec Sheet (igps.net)
Maersk, Our fleet - equipment specifications: dry containers (PDF, maersk.com local information)
Maersk, Our fleet - equipment specifications: reefer containers (PDF, maersk.com local information)
Hapag-Lloyd, Container Specification (booklet, 03/2016), pp. 9, 11, 13, 15, 41, 43
CMA CGM, Containers - technical specifications (web page)
Shipping Container Dimensions & Weight: 20ft, 40ft, HC, ReeferHapag-Lloyd, Container Specification (booklet, 03/2016), pp. 5, 9, 11, 13, 15, 41, 43
Maersk, Our fleet - equipment specifications: dry containers (PDF, maersk.com local information)
Maersk, Our fleet - equipment specifications: reefer containers (PDF, maersk.com local information)
CMA CGM, Containers - technical specifications (web page)

Source: this site's data files, checked Nov 10, 2026

Change log

Every published change to a page or a data table is logged here with its date, newest first. A page's "last updated" date only changes when an entry for that page appears in this log; we do not refresh dates without a change.

Change log, newest first
DatePageChangeData file
Nov 11, 2026HomePage published—
Nov 11, 2026Freight Class Calculator (NMFC 2025 Density Scale)Page published. Data checked 2026-10-30nmfc_density_scale.csv; references.csv
Nov 11, 2026Freight Class Chart 2025: Old 11-Tier vs New 13-Tier ScalePage published. Data checked 2026-10-30nmfc_density_scale.csv
Nov 11, 2026Standard Pallet Sizes, Dimensions & Weight (US, ISO, EUR)Page published. Data checked 2026-10-30 (pallet weights 2026-11-10)pallet_standards.csv; pallet_weights.csv; container_specs.csv
Nov 11, 2026Shipping Container Dimensions & Weight: 20ft, 40ft, HC, ReeferPage published. Data checked 2026-10-30container_iso668.csv; container_specs.csv
Nov 11, 2026CBM Calculator: Cubic Meters & How Many Boxes Fit a ContainerPage published. Data checked 2026-10-30container_specs.csv
Nov 11, 2026Chargeable Weight Calculator: Air Freight (IATA & Express)Page published. Data checked 2026-10-30air_divisors.csv
Nov 11, 2026Sources & Change LogPage published—
Nov 11, 2026About Global Cargo InsightPage published—
Nov 11, 2026Owen Hartley, EditorPage published—
Nov 11, 2026ContactPage published—
Nov 11, 2026Privacy PolicyPage published—
Nov 11, 2026Terms of UsePage published—
Nov 11, 2026Editorial Policy: How We Source and Check DataPage published—

Source: this site's change log