Quick view Nilfisk NF56704409 paper bag package of 8 plus 2 filters for Clarke Viper and Advance machines $19.87 $18.25 each DRCT NF56704409 $19.87 $18.25 Nilfisk NF56704409 paper bag package of 8 plus 2 filters for Clarke Viper and Advance machines Add to Cart Detailed View