Classification Details
| NMFC | Description | Class |
|---|---|---|
| 37340.00 | Ventilators, chimney or roof, NOI, not chimney caps nor cowls, iron or steel: |
How to Determine Your Class
To find the correct freight class for your shipment:
- Verify the product is a ventilator (roof or chimney) made of iron or steel, and not a chimney cap or cowl. Include a spec sheet or product link on the BOL to avoid reclass.
- Palletize domed or turbine units upright. Block the base flanges with wood, add edge guards, then band and wrap to prevent denting of thin-gauge metal.
- For loose or stacked ventilators, bag fasteners, pad sharp edges with corrugated, and crate units with protruding blades or hoods to keep carriers from stacking on top.
- List NMFC 37340 on the BOL with piece count, pallet count, precise dimensions, and total weight. Note material as iron/steel and mark non-hazardous.
Note: All classifications are subject to Item 170. Verify with official NMFC publications for the most current requirements.
Business Value
- Accurate NMFC match reduces reclass fees and disputes versus misrating as generic metal parts or chimney caps.
- Clear NOI definition streamlines quoting and carrier acceptance, helping roofing suppliers and mechanical contractors secure consistent LTL rates.
- Damage-limiting packaging guidance cuts claim risk on thin-sheet housings and flanges, preserving margins on repeat shipments.
- Non-hazardous status simplifies compliance and broadens carrier options, improving transit times on time-sensitive roofing projects.