Plastics; builders' wares n.e.c. or included

392510 Plastics; builders' ware, reservoirs, tanks, vats and similar containers of a capacity exceeding 300 litres 392520 Plastics; builders' ware, doors, windows and their frames and thresholds for doors 392530 Plastics; builders' ware, shutters, blinds (including venetian blinds) and similar articles and parts thereof 392590 Plastics; builders' ware, n.e.c. or included in heading no. 3925