Blueair Pre-Filter for 411 Air Purifier | Dark Shadow | Catches Larger Particles, Extending The Life Of The Main Filter | Machine Washable

I've had this about a month now and these pre-filters work really well. It does a great job at catching larger dust particles, pet hairs etcIn the photo's, I've tried to show the dirty dusty filter, then I've vacuumed a section so you can clearly see the dirt/dust/hair on either side and then the last photo is the fully vacuumed 'clean' filter.I bought this so that I can have the Air Purifier running 24/7. I swap them every 3-4 weeks and wash in the machine on a cold gentle cycle, leave to dry in the airing cupboard. I vacuum the pre-filter every week (in-between washing) and I'm amazed at how much dust/hair accumulates over the surface of the pre-filter. I have 2 large golden retriever's and these air purifier's have really helped control the dirt/dust in the house and the inevitable 'doggy' smells!They are super easy to fit onto the actual air purifier. The material is very stretchy and so you simply remove the top of the purifier, remove the old/dirty pre-filter and then stretch the new into place. Simple!My top tip is to always vacuum the pre-filter before removing it from the unit. Wash these on a gentle cold cycle and then air dry them. If you do that, they will last a long time.

Just a visual upgrade, the grey helps it fit rooms decor better.

Bought the black filter covers as they matched better with my interior colour scheme. Easy to fit and allows the spare to be washed.The fabric need a good stretch as they are tight fitting and a tiny bit shorter that the original, that came with the machine.... Overall very happy with purchase.

Good

Love it, the blue was clashing with everything in my flat