NMFC 37220 - Stair Treads or Risers, iron, NOI | Class 55

To find the correct freight class for your shipment:

1. Palletize treads flat with wood dunnage between layers, then band twice lengthwise and once crosswise; add corner protectors to shield sharp nosings.
2. Bundle loose risers in countable sets (e.g., 10), wrap bare iron with VCI or film to limit rust bloom, and stencil bundle weight for safe forklift handling.
3. Limit pallet height to about 28–32 inches to reduce tipping risk and use 4-way pallets so carriers can approach from any side.
4. Print NMFC 37220 and Class 55 on the BOL; as NOI iron, no density calculation is needed unless mixed with non-iron items.

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

• Fixed Class 55 eliminates density debates, lowering the chance of costly reclass and surprise adjustments.
• Damage mitigation from proper bundling and edge protection keeps nosed edges intact, reducing claims and installation delays.
• Non-hazardous designation broadens carrier options and simplifies paperwork, often improving LTL pricing.
• One NMFC for both treads and risers enables SKU consolidation on a single shipment, improving minimum charge utilization.