Which filters does the Festool CT 15 take?

Cartridge filter 204201, Dust bag 204308, Dust bag 204309.

Festool CT 15 shop vac filters: 204201

Cartridge filter

Pleated cartridges clog with use. Replace one that stays dirty after a rinse.

Shop the cartridge filter on Amazon Other models that use 204201

Dust bag

Bags made to fit this model's inlet and tank.

Shop the dust bag on Amazon Other models that use 204308

Dust bag

Bags made to fit this model's inlet and tank.

Shop the dust bag on Amazon Other models that use 204309

1Cartridge filter204201

2Dust bag204308

Part numbers come from Festool (source 1, source 2), checked November 7, 2026. Amazon buttons open a search for the part number; we may earn a commission.

Where the model number is

On a label on the motor head or the side of the tank.

Other Festool shop vacs

CT 22CT 25CT 26CT 33CT 36CT 36 AC