![Blueair Close up of 311 Auto prefilter on blue background Blueair Close up of 311 Auto prefilter on blue background](https://www.blueair.com/dw/image/v2/AASF_PRD/on/demandware.static/-/Library-Sites-blueair-us-content-library/default/dw572ff2c9/UIUX2021/PDPs/Blue%20prefilters/311%20Auto%20prefilters/Blueair-PreFilterPDP-Secondary01-BP311AutoPre-0122-dsk.png?sw=468)
Where form meets function
Our fabric pre-filters extend the life of primary filters, catching large airborne particles such as dust, lint, pollen, and pet hair. They're colorful too, and can be customized to compliment your space.
![Blueair Image of Blue Pure 211+ Auto prefilters in color assortment (dark grey, navy blue, teal, blush pink, light grey) Blueair Image of Blue Pure 211+ Auto prefilters in color assortment (dark grey, navy blue, teal, blush pink, light grey)](https://www.blueair.com/dw/image/v2/AASF_PRD/on/demandware.static/-/Library-Sites-blueair-us-content-library/default/dw60da51f2/UIUX2021/PDPs/Blue%20prefilters/211+%20Auto%20pre-filter/Blueair-PreFilterPDP-Secondary02-BP211+AutoPre-0122-dsk.png?sw=468)
Switch color in seconds
Up to 5 Scandinavian-inspired colors let you add a splash of color or a shade to compliment your space. Night Waves and Arctic Trail Pre-Filters come as standard with your Blue Pure Auto air purifier.
![Blueair icon- less noise and energy Blueair icon- less noise and energy](https://www.blueair.com/on/demandware.static/-/Library-Sites-blueair-us-content-library/default/dw293e502f/New/Icons/New%20Icons%20July%2020/icon_filterchange_halfsize.png)
While this pre-filter is designed to be compatible with the 211+ Auto, it may also be used with the standard 211+ model at a slightly increased noise level.
For quick cleaning, use the brush attachment on your vacuum to clean the exterior of the fabric pre-filter of visible dust and dirt between washes.
When the pre-filter requires a deeper clean, wash on a gentle, low-temperature cycle in a washing machine. Hang to dry.
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Filter TypeFabric pre-filter 100% polyester, Stretch panel 94% polyamide 6% spandex
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Dimensions(HxWxD)14.0 x 0.08 x 15.2 in in
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Product weight0.15lbs
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Number of filters1
This pre-filter is compatible with the Blue Pure 411 Auto model. It may also be used with Blue Pure 411 and MINI models at a slightly increased noise level. Pre-filter is not compatible with the 411+ model.
This item includes one replacement pre-filter fabric.
Yes, there are a total of five pre-filter colors available for the Blue Pure 411 Auto; Arctic Trail (gray), Winter Reed (light gray), Archipelago Sand (pink), Aurora Light (green), and Night Waves (navy). Pre-filter in Arctic Trail color comes standard with air purifier.
¹A flat shipping rate of $25.00 will be charged on filter shipments to Alaska, Hawaii, and Puerto Rico. Additional charges may apply for shipments over 30 lbs. A flat shipping rate of $5 will be charged on orders under $39 that are not part of filter subscription.