Machine Capacity
S/T/F Series 300 Litres
V Series 390 Litres
Mini 255 Litres

Westwood powered grass collectors (PGC) generally have a capacity of 300 litres across the range. 

The exception to this is the mini which has a capacity of 255 litres and the Westwood V25/50HE which have a capactiy of 390 litres.