... .2-4.8mm) 2.Size:1800*1050*620MM 3.Drop-in ground 4.CE,ETL,RoHS portable bathtub/acrylic bathtub M-20381 ... .Size:1800*1050*620MM2.Drop-in ground3.CE,ETL,RoHS,CQC,ISO9001:2008,ISO140004.Material:acrylic ... massage system6. Circulating filtration system7. Air froth system8. circle surf in the middle part