IF($itemweight >   0.01  AND $itemweight <   0.51, $amazonaushippingtemplate = "Shipping Class 1",""),
IF($itemweight >   0.51  AND $itemweight <   1.01, $amazonaushippingtemplate = "Shipping Class 2",""),
IF($itemweight >   1.01  AND $itemweight <   3.01, $amazonaushippingtemplate = "Shipping Class 3",""),
IF($itemweight >   3.01  AND $itemweight <   5.01, $amazonaushippingtemplate = "Shipping Class 4",""),
IF($itemweight >   5.01  AND $itemweight <  10.01, $amazonaushippingtemplate = "Shipping Class 5",""),
IF($itemweight >  10.01  AND $itemweight <  20.01, $amazonaushippingtemplate = "Shipping Class 6",""),
IF($itemweight >  20.01  AND $itemweight <  30.01, "Shipping Class 7",""),
IF($itemweight >  30.01  AND $itemweight <  40.01, "Shipping Class 8",""),
IF($itemweight >  40.01  AND $itemweight <  50.01, "Shipping Class 9",""),
IF($itemweight >  50.01  AND $itemweight <  70.01, "Shipping Class 10",""),
IF($itemweight >  70.01  AND $itemweight <  90.01, "Shipping Class 11",""),
IF($itemweight >  90.01  AND $itemweight < 100.01, "Shipping Class 12",""),
IF($itemweight > 100.01  AND $itemweight < 120.01, "Shipping Class 13",""),
IF($itemweight > 120.01  AND $itemweight < 130.01, "Shipping Class 14",""),
IF($itemweight > 130.01  AND $itemweight < 150.01, "Shipping Class 15",""),
IF($itemweight > 150.01  AND $itemweight < 170.01, "Shipping Class 16",""),
IF($itemweight > 170.01  AND $itemweight < 200.01, "Shipping Class 17",""),
IF($itemweight > 200.01  AND $itemweight < 250.01, "Shipping Class 18",""),
IF($itemweight > 250.01  AND $itemweight < 350.01, "Shipping Class 19",""),
IF($itemweight > 350.01  AND $itemweight < 450.01, "Shipping Class 20","")