Carrier profile · USDOT 3317311 · Updated Jun 13, 2026
General Sheet Metal and Mechanical LLC
7 power unitsUPPER MARLBORO, MD50/100
AUTHORITY STATUS UNKNOWN
Operations & Lanes
Where this carrier actually runs, revealed by roadside-inspection geography over the last 24 months — not where they claim to operate, shown as state-level inspection density.
Inspection density by state· each tile = a state · shade = inspections, last 24 mo
Home base
UPPER MARLBORO, MD
Density
fewermore