Filter-Monster – Replacement HEPA Filter – Compatible with Therapure TPP440F Filter for Therapure Air Purifier TPP440, TPP540, and TPP640 Air Purifiers

They were super easy to install and I was extremely happy of the price so I ordered 2 of them. They lined up perfectly where the original filter was. I am definitely ordering these again.

Fit perfectly. There was no plastic odor or any smell for that matter. The new filter made our airpurifier like new again!

We were looking for the AP200 filter for our environ air purifier and this fit perfectly! Even the manufacturer is out of stock for the AP200 filter. We took a chance and ordered this as the dimensions were the same as the AP200 and it fit like a glove! Manufacturer should include the AP200 as a compatible filter in their description. Don’t know if it is as effective as the original, but it looks well built and I’m sure it will work well

The FilterMonster HEPA filters I ordered for our Therapure room air filters work perfectly, fit just fine, and enable the filter to run quietly and efficiently. Their price is much more reasonable than the originals! I recommend this product highly.

This was just like the original filter

Perfect fit as a replacement filter. I know it's doing its job, as the machine isn't building up dust residue on the front. When it starts to do that (dust residue) on the front even after vacuuming the filter out.. means its getting clogged up. 6 months max is a good life time length of use. My opinion. That's why I purchased the 2 pack.

Original filter looked moldy. Need to refresh filters for health safety.

Great price,delivered to our door.

Fast prompt delivery. Replacement was a perfect fit.