Numatic Hepa-Flow High Efficiency Filter Bags (NVM-1CH, 604015) (pack of 10) - fits most of the Henry series of vacuums from Numatic/NaceCare (ie, canister sizes 160, 170, 180, 200, 240, 250 and 300). These are genuine (not aftermarket) bags and should be used to contain extracted dust and debris and to protect the motor from damage. Plastic flap seals the bag and contents at disposal. Great value at $2.50/bag which is why I only offer the 10pc packaging.

The bags are made from three layers of spun polypropylene and no fiberglass is used. HepaFlow filter bags will filter particles down to 0.3 microns in size. Bag capacity is 9 liters...same bag is used for the 160 size canister all the way up to the 300 canister.

All Henry series vacs also have a standard Tritex drum top filter to further protect the motor and the HEPA certified machines (like the NVR170H) have an H13 HEPA filter element right at the motor.