SEBO S-Class Exhaust Microfilter Insert for 300 and 350 Mechanical

S-class filter media in a moulded insert frame: 50170ER is the standard exhaust filter for the SEBO 300 Mechanical and 350 Mechanical uprights. It occupies the exhaust position at the back of the machine and treats the airstream only after the bag and the pre-motor microfilter have each taken their share, which is a large part of why it lasts as long as it does.

Where the HEPA version of this insert trades a little airflow for the finest capture, the S-class insert is the balanced everyday choice and is what most 300 and 350 machines were built around. The two share the same cavity, so choosing between them is a matter of preference rather than a modification; 50169ER is the HEPA part number if you want to go the other way.

Fit a fresh one when the pleats read gray rather than white, or when the exhaust starts carrying a dusty smell on start-up. The media is sealed into the frame and is replaced as a complete unit, with nothing inside to clean or shake out.

• Part: 50170ER, S-class exhaust insert
• Fits: SEBO 300 Mechanical and 350 Mechanical
• Interchangeable with: HEPA insert 50169ER, same cavity
• Construction: sealed media, replaced as a complete unit
• Change when: the pleats look gray, or the exhaust smells dusty
• Also worth changing: 5036AM pre-motor microfilter
• Position: exhaust stage at the back of the machine, after the motor
• Bags: 5093AM covers the 300 and 350 Mechanical

For most households this is the insert to keep on the shelf. It is what the 300 and 350 were designed around, it costs the machine the least in airflow, and it is what keeps a mechanical upright feeling the way it did when it was new. Order it by part number rather than by description, since the exhaust position on these machines takes a framed insert rather than a loose pad.

Genuine SEBO stock, ships in 2-5 business days.