NMFC 38610: Iron/Steel Storm Cellars (SU) | Class N/A

To find the correct freight class for your shipment:

1. Call out Set-Up (SU) packaging on the BOL and list true footprint, including any door overhangs, anchor plates, or lifting lugs to prevent surprise handling issues.
2. Mount the cellar on a rigid skid or timber runners, block and brace at the base, and use wide edge protectors under chains/straps to protect coated steel surfaces.
3. Choose mode by dimensions: oversized widths or heights typically require flatbed/step-deck; only use LTL if the unit can be safely handled with forklifts at terminals.
4. Plan delivery like a jobsite move—request appointments, note limited access, and confirm offloading gear (crane, telehandler, spreader bar) and tie-down points.

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

• Proper SU declaration for iron/steel storm cellars reduces reclass and inspection delays, keeping projects on schedule.
• Robust blocking, bracing, and tarping minimize damage claims on heavy-gauge steel, avoiding costly repairs and reshipments.
• Right-size mode selection (LTL vs partial TL vs flatbed) controls cost by avoiding cubic-capacity penalties and refused freight.
• Arriving set-up accelerates installation and labor planning at the site, improving crew utilization and project timelines.