NMFC 51040 - Sound-Deadening Duct Material | Class 60

To find the correct freight class for your shipment:

1. Pack strips or roll-form connectors in rigid cartons with edge guards; band tightly to stop unwinding or telescoping, then palletize for LTL.
2. Add moisture protection for the sheet steel—poly wrap or VCI paper—and keep the fabric side protected from abrasion to preserve the sound-deadening layer.
3. Palletize cartons in a single flat layer to avoid flat spots; use corner boards and two-way strapping to prevent shifting in transit.
4. List the NMFC item on the BOL: duct connection material, sheet steel and fabric combined, in packages; include piece count and note Class 60.

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

• Fixed Class 60 simplifies quoting and reduces reclass risk compared with density-based items.
• Nonhazardous status streamlines carrier acceptance and minimizes accessorial delays.
• Package-first handling cuts edge damage and kinked strips, lowering claims and replacement costs.
• Clear NMFC wording on the BOL speeds check-in and helps secure better LTL rates for HVAC projects.