Multi-region, US vs EU voltage on motorized equipment, freight class, how?

Motorized fitness equipment is not globally fungible. A US treadmill (120V / 60Hz) blows up on EU power (230V / 50Hz). The motor + inverter + control board are voltage-specific.

Modeling on Magento:

• Separate SKUs per region, NT-2200-US vs NT-2200-EU vs NT-2200-UK. Same product family in Magento, different simple SKUs (or variants of one configurable).
• Multi-source inventory, US warehouse stocks US SKUs only, EU warehouse stocks EU SKUs only. Magento MSI handles this natively, customer geo-routes to the right warehouse + stock.
• Store views per region, US store view in USD with tax-excluded prices, EU store view in EUR with VAT-included, UK in GBP. Different financing options per region (Affirm in US, Klarna + Clearpay in EU/UK).
• Freight class differs: US uses NMFC freight class (50-500), EU uses LDM (loading metres) or Euro pallet count. Different rate engines required. ShipperHQ handles US; for EU, integrate with Sendcloud or Shipmondo.

Plate / barbell variants: the bumper plates themselves are voltage-agnostic but weight units differ, US lists in pounds (45 lb), EU lists in kilograms (20 kg). Use store-view-specific labels in Magento; the SKU is identical.

Compliance certifications differ: US needs UL listing (motorized equipment); EU needs CE marking + EN 957 spec; UK post-Brexit needs UKCA marking (transitioning from CE). All three are separate product-attribute fields in Magento.