For the same hypothetical pallet, the cited R+L rule path uses actual height and yields 11.9 lb/ft³, while Saia's 96-inch substituted-height rule yields 5.95 lb/ft³—half the density—because their height-trigger conditions differ.

Fixed hypothetical shipment: one pallet of new boxed non-hazardous steel machine components; packed 48 × 40 × 48 in; gross 635 lb; BOL: DO NOT STACK. No verified NMFC item or customer exception.
CarrierDecision basisDerived cube / densityRounding ruleCommon disagreementConfirmed classSource locatorRetrieved
R+L Carriers[R1] · 2026-11-03Item 490: the 95-in option requires actual height >50 in; this pallet is 48 in.[R1] · 2026-11-0348*40*48/1728 = 53.333333 ft3; 635/cube = 11.906250 pcf (derived).[R1] · 2026-11-03not located within Item 490.[R1] · 2026-11-03DO NOT STACK alone does not meet this height trigger.[R1] · 2026-11-03not located: NMFC exempt status not verified.[R1] · 2026-11-03Item 490, p33; Item 994, p128.[R1] · 2026-11-032026-11-03[R1] · 2026-11-03
Saia[S1] · 2026-11-03Item 1001(3)(d): no top loading on BOL requires height >=96 in.[S1] · 2026-11-0348*40*96/1728 = 106.666667 ft3; 635/cube = 5.953125 pcf (derived).[S1] · 2026-11-03not located within Item 1001.[S1] · 2026-11-03Minimum-height substitution, not rounding. Retrieved 2025 edition.[S1] · 2026-11-03not located: commodity item and governing edition not verified.[S1] · 2026-11-03Item 1001, pp131-132; 1001-A, pp132-133.[S1] · 2026-11-032026-11-03[S1] · 2026-11-03
Magnum LTL[M1] · 2026-11-03Item 470(2): BOL/freight no-top-loading instructions require height >=96 in.[M1] · 2026-11-0348*40*96/1728 = 106.666667 ft3; 635/cube = 5.953125 pcf (derived).[M1] · 2026-11-03not located within Item 470.[M1] · 2026-11-03Item 110 separately refers NMFC classification dimensions to NMFC.[M1] · 2026-11-03not located: density-rate rule is not a commodity class decision.[M1] · 2026-11-03Items 110 / 470, pp4 / 7.[M1] · 2026-11-032026-11-03[M1] · 2026-11-03
FedEx Freight[F1] · 2026-11-03Public Cube Calculator only; comparable non-stackable tariff ruling: not located.[F1] · 2026-11-03ceil(48*40*48/1728) = 54 ft3; 635/54 = 11.759259 pcf (derived here).[F1] · 2026-11-03Dimension fractions up to inches; resulting cube up to whole ft3.[F1] · 2026-11-03Tool outputs cube, not the shipment’s classification or billing decision.[F1] · 2026-11-03not located: cube tool does not return class.[F1] · 2026-11-03Cube instructions; calculate()/round() code.[F1] · 2026-11-032026-11-03[F1] · 2026-11-03

Edition-locked, reproducible comparison of published density rules and a public cube tool. This is not four carrier-confirmed classifications, quotes or a claim of global originality. Retrieved versions may be superseded.

Official sources and editions

How to reproduce

All shipment inputs are author-defined hypothetical inputs, not observed freight. Calculate cube as length × width × applicable height ÷ 1728; divide gross pounds by cube. Use exact values before display rounding. Six decimal places are our display choice. The FedEx row applies its standalone cube-tool rounding and does not establish its non-stackable billing rule.

not located means not established within the cited source scope; it does not mean no rule exists elsewhere. Missing verified NMFC items, governing customer terms and carrier decisions prevent confirmed class results. No fees or freight quotes are calculated.

Suggested citation

Freight Class Desk, One Non-Stackable Pallet: Carrier Density Rules Compared, sources retrieved 2026-11-03. Use a repository commit permalink to cite a fixed CSV version, and the carrier source for the underlying rule. Global originality has not been established.