Size & Fit
Concrete Block Dimensions: Why an 8x8x16 Isn't 8 Inches
Concrete block dimensions explained: a nominal 8x8x16 CMU actually measures 7 5/8 x 7 5/8 x 15 5/8 in. The nominal-vs-actual math, and what to print on your spec.
Field Notes
Tips and guides for adding size annotations to your product images
B2B & Suppliers
Gaylord Box Sizes: Why 48x40x48 Won't Double-Stack
Gaylord box sizes are a container decision: how box sizes are quoted, what each wall count carries, and why 48x40x48 will not double-stack.
Seller Growth
Amazon Packaging Fee: The $2.07 Your Carton Spec Decides
Amazon packaging fee: since 15 January 2026, bulky FBA units outside SIPP pay about $2.07 each. Which carton specs certify, which test applies, what to send.
Size & Fit
Dresser vs Chest of Drawers: Where the Name Misleads Buyers
Dresser vs chest of drawers: dimension bands side by side, what each name means in the US, UK and Australia, and the 27-inch line that regulates both.
Seller Growth
Additional Handling Surcharge Dimensions: Now 6 Cubic Feet
Additional handling surcharge dimensions now include a cubic-volume trigger: 10,368 in³ for handling, 17,280 in³ for oversize. The math, the costs, the fixes.
Compliance
Empty Space Ratio: The 50% Cap Lands in 2030, Not 2026
The empty space ratio caps grouped, transport and e-commerce packaging at 50% — from 1 January 2030, not August 2026. How to measure it and what to fix now.
Compliance
Allegro Image Requirements: Two Rulebooks, One Listing
Allegro image requirements split in two: the thumbnail bans units of measurement, gallery photos allow them. Which rule applies to which photo, and why.
B2B & Suppliers
Work Size vs Coordinating Size: Where Brick Quotes Break
Work size vs coordinating size decides whether a brick quote matches the architect's drawing. The eight fields to publish, with UK, US and German examples.
Compliance
How to Read a UN Packaging Code: 1A1/Y1.4/150 Decoded
A UN packaging code says what the empty drum survived in a lab, not what is inside. Decode every field of 1A1/Y1.4/150/26/USA before cargo gets rejected.
B2B & Suppliers
How Much Weight Can a Pallet Hold? 1,500 kg Is a Guess
How much weight can a pallet hold? EPAL says 1,500 kg, CHEP says 1,000 kg for the same 1200x800 pallet. Why both are right, and which number to quote.
Seller Growth
USPS Package Size Limits: Where 108 Inches Changes the Price
USPS package size limits turn on girth, not weight: 108 inches for Priority Mail, 130 for Ground Advantage, plus three size fees that stack before it.
B2B & Suppliers
Air Freight Maximum Dimensions: The 163 cm Ceiling
Air freight maximum dimensions are set by the ULD, not the aircraft: 163 cm in the belly, 244 cm on a freighter. The real ULD numbers, and what they cost you.