Numatic wv1800dh industrial wet vac this wet only industrial vacuum has a huge 70 litre capacity the 1200w motor produces an impressive 38 litressecond airflow and the outer shell is constructed from high impact structofoam this incredibly durable plastic is the ideal material for tough rugged industrial and commercial vacuum cleaners because it is as close to indestructible as you can get the drum of the machine has two large wheels at the rear to provide balance and stability when on