Carrier profile · USDOT 332560 · Updated Jun 13, 2026
DUFF SUPPLY CO INC
DBA DUFF COMPANY
5 power unitsavg 2.2 yrLocal · 2 statesNORRISTOWN, PA100/100
AUTHORITY STATUS UNKNOWNRATED SATISFACTORYHAZMAT
Identity & Federal
The official FMCSA identity — legal name, DBA, addresses, contact, officers, and registration — alongside the daily-captured federal-record activity feed, monitored daily by Vektor.
Location
- Physical address
- 201 E LAFAYETTE ST, NORRISTOWN, PA, 19401
- Mailing address
- PO BOX 618, NORRISTOWN, PA, 19404
- Operation
- Interstate· Hazmat
Contact
- Phone
- (610) 275-4453
- Fax
- (610) 275-6761
- info@duffco.com
- Web domain
- duffco.com
Registration
- Officers
- Michael A Mangine · Alexander S Duffine
- USDOT / docket
- 332560
- First registered
- Nov 18, 1988
- Last MCS-150
- Aug 12, 2024 · 220,000 mi (2024)
- FMCSA safety rating
- Satisfactory · Apr 21, 2006
- D-U-N-S
- 2481604
Fleet (self-reported · MCS-150)
MCS-150 filing history· biennial-update cadence
Per-filing MCS-150 history (each biennial update + the fleet/mileage it reported) is being captured from the daily federal feed and will appear here as we capture the full history.
Federal record activity· monitored daily by Vektor
No licensing or insurance changes captured since Vektor began monitoring this carrier (June 2026). Quiet is usually good.