Prolux Phantom Upright Instruction Manual page 17

3. Place the collar of the new dust bag
over the fill port, and gently work
into place until it is fully seated.
Only use model specific bags by
Prolux for optimum performance.
4. Tuck the bottom and sides of the bag into the compartment so that the lid seals properly,
then replace the lid until it clicks firmly in place.
17