The selected declarations already differ
Not from that number alone. Our two selected nominal 80×80 offers declare different lengths:80 m for 3758B and 68.8 m for TTR001. The common outside-size label does not establish identical wound length or a standard universal 80 m roll.
Missing construction details matter
Core dimensions,paper thickness,winding and tolerances are relevant physical details. Gsm does not directly supply thickness,and a listing’s core-size label may not specify both inside and outside spool measurements. None of these cartons was unwound or physically measured here.
Do not substitute a geometry estimate
A calculated annulus based on guessed thickness would add assumptions not verified by the selected offer. It could also hide the difference between nominal and actual outer diameter. This site does not use such an estimate to overwrite a supplier’s declaration or promise how much usable paper arrives.
Compare only an explicit length
Use the exact current stated length for a labelled purchase comparison. If a supplier gives no length,retain per-roll or per-carton cost and mark the metre denominator unknown. For a procurement requirement needing verified length,ask for an exact specification or tolerance rather than deriving one from the photograph.
Apply the field to a purchase
An unlisted length should not be made up to complete a ranked table. A clear per-roll quote with a missing metre field is more useful than a precise-looking figure based on a guessed thickness.
Sources & scope
Checked November 5, 2026. Manufacturer and retailer references support the specific statements. Dated displayed prices are not final checkout quotes, performance rankings or performance testing. This shopping reference does not replace the exact product label or retailer instructions. Current received labels and independent printer/media/material/content/commerce review remain pending.
POS Central UK3758B20-roll80m offer ↗
Keep reading
How should I read 80×80×12.7 mm without mixing the fields? ↗