Oct 2, 2026
Void Fill Packaging: Paper vs Air Pillows vs Foam
Compare paper, air pillows, foam and other void-fill options by protection, dimensional weight, packing speed, storage and sustainability.
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Guides
Practical explainers for packaging, shipping, pallets and freight—built to complement the calculators.
Oct 2, 2026
How to Read a Box Maker’s Certificate (BMC)
Learn how to read a Box Maker’s Certificate, including ECT or burst rating, gross weight limits, size limits and what the stamp does—and does not—tell you about shipping performance.
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ECT vs Mullen Test: How to Choose Corrugated Box Strength
Learn the difference between ECT and Mullen burst ratings, what each test measures and how to choose corrugated box strength for parcel, pallet and warehouse use.
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LTL Reweigh and Reclassification: Why Freight Invoices Change
Learn why LTL carriers reweigh or reclass freight, how density and dimensions affect billing, and what evidence helps prevent or dispute corrected invoices.
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LTL Accessorial Charges Explained: Liftgate, Residential, Limited Access and More
A practical guide to the most common LTL accessorial charges, what triggers them and how to reduce surprise invoice adjustments.
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Parcel Invoice Audit: How to Find Shipping Billing Errors and Cost Leakage
Learn how to audit parcel invoices for dimensional-weight corrections, residential fees, service failures, address issues and other shipping cost leakage.
Read guideOct 2, 2026
Multi-Carrier Shipping Strategy for Ecommerce in 2026
Build a practical multi-carrier shipping strategy using package profiles, zones, service levels, surcharges and operational rules instead of defaulting every order to one carrier.
Read guideOct 2, 2026
Heavy Package Shipping: 70 lb vs 150 lb Parcel and Freight Thresholds
A practical guide to shipping packages over 70 lb and understanding when 150 lb becomes the line between parcel handling and freight.
Read guideOct 2, 2026
Fuel Surcharges Explained: How FedEx and UPS Apply Them in 2026
Understand how FedEx and UPS fuel surcharges are calculated, why percentages change weekly and how fuel can apply to more than the base transportation charge.
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