Eeach one voltage stabilizer one wooden case packing box.inside we first used one plastic plastic bag.then used 4pcs foam by 3.5mm thinkness protect door meter and switch.english manual.shipping size is 3 phase is 60*57*108,single phase is 48*52*92.shipping weight have 130KG.regulation coil design used 1.8 wire.in china market only is 1.68 wire.