NMFC 37240 – Steel Alternating-Tread Stairs, Class 175

Note 37241: NOTE-Applies on stairs having half-treads or half-steps on alternating sides of a central stringer.

To find the correct freight class for your shipment:

1. Confirm your product meets the NMFC note (item 37241) for alternating-tread design and list NMFC 37240, Class 175 on the BOL.
2. Pack the stair components in strong fiberboard cartons as required; add edge protectors on stringers, wrap rubber treads, and bag all hardware to prevent abrasion.
3. Palletize multiple cartons to a 48x40 pallet, strap and stretch-wrap tightly, and mark Do Not Clamp to avoid carton crush from clamp trucks.
4. Provide carton count, total weight, and outer dimensions for quoting; request non-stack or top-load only if treads or stringers could deform under load.

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

• Fixed Class 175 simplifies rating and reduces reclass risk, stabilizing LTL quotes for project bids.
• Fiberboard-carton packaging aligns with carrier expectations, lowering damage claims and exception fees.
• Non-hazardous status broadens carrier options and helps maintain tight construction timelines.
• Clear NMFC mapping accelerates tender-to-pickup cycles and improves cost predictability for metalwork shipments.