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Cleaning-free spa filter for Nordic Retreat, Comfort Garden etc.

Cleaning-free Spa filter sannra™ is suitable for Nordic Retreat and Comfort Garden, among others. 

To see which other hot tubs this filter fits, among others: Click here!

Equivalent: Darlly: 40355, SC851 Unicel: 4CH-935 Pleatco: PWW35L

Also available as a washable filter here.


460,00 kr

Article number: 340355

Add 4 and only pay for 3

Stock balance: 5+

Cleaning-free spa filters from Sannra™ simplify your spa life.

No cleaning - No filter chemicals - Clearer bathing water.

You never have to wash dirty filters or buy filter chemicals again. After 3 months, simply replace the filter and insert a new one. Each filter lasts about 3 months of normal bathing. So if you have two filters in your bath, you change them after about 5-6 months.

A cleaning-free spa filter removes particles down to 1-5 microns, compared to traditional washable lamella filters that can only handle about 20 microns. This gives you clearer bathing water without having to use flocculants.

The filters are made of spun plastic, polypropylene, which has been treated to be antibacterial. The manufacturing process can be likened to making cotton candy where thin strands are formed layer by layer. All these layers give the filter a very large 'surface area' that can absorb dirt. The same type of filter is used in face masks.

Care instructions Sannra™ Cleaning-free spa filters

The filters need to be changed every three months for normal bathing. If you bathe often and frequently, the filter must be changed more often. If you use two filters, change them every 6 months etc. If you use several filters in your bath, it is good to check whether the water to the circulation pump goes through one or all filters. If the water goes through a filter, it is good to change the location of the filters sometimes to get an even load on them.

Never use flocculants with these filters. The filters naturally remove small particles that cause cloudy water. Do not use oil-based fragrances that clog all types of filters.

We recommend using an old rinsed filter for 24 hours after changing the water and cleaning the pipes. There are usually small particles in the new water and residues may come out of the pipes after cleaning, shortening the life of the filters.

If you have very high iron content in the water, which is not filtered out before filling the spa, we advise against the use of cleaning-free filters. These remove particles down to 1-5 microns which makes them easily clogged by high iron content.

Weight 0,5 kg
Filter length


Equivalent to Darlly

40355, SC851

Equivalent to Pleatco


Equivalent to Unicel


Filter diameter




Bottom connection

Internal thread

Connection Ø

42 mm

Type of filter


Home delivery


Corresponds to Article

PWW35, SC779


Darlly40355, SC851

Suitable for, among others:

Even if your model is not listed, it may fit. Always check the size.

Catalina Spa
Elite Spa
Nordic Hot Tubs spa filter
Passion Spas
Sunrise Spas

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