NMFC 172400 – Sash & Window Units in Crates | Class 125

To find the correct freight class for your shipment:

1. Pick packaging by size and fragility: heavy or oversized sashes and frames belong in wood crates; small multiples can go in double‑wall boxes with inner cartons, then palletize.
2. Protect glazing and edges: add corner blocks, foam interleaf between panes, rigid edge guards, and immobilize frames so glass sits vertical. Mark “Fragile – Glass” and “This Side Up.”
3. Record exact counts and outer dimensions for each box or crate on the BOL. Note “glazed or unglazed, airplane or railway car windows” and apply fixed Class 125—no density needed.
4. For irregular aircraft or railcar windows, spec custom bracing and desiccant packs, strap crates to a pallet with no overhang, and request non‑stack instructions if required.

Note: All classifications are subject to Item 170. Verify with official NMFC publications for the most current requirements.

• Predictable pricing with fixed Class 125 simplifies quoting and reduces surprises from density reclassifications.
• Proper crating and edge protection cut breakage risk, lowering claim rates and keeping project timelines on track.
• Clear NMFC 172400 labeling speeds carrier acceptance and minimizes reweigh/rebill fees for specialty window freight.
• Right‑sizing boxes versus crates balances material cost with damage prevention, improving total landed cost.