Introducing Dry-Cleanse 3-Ply Filters from Dry Solutions Inc. With Dry-Cleanse 3-Ply Filters you get the highest quality filter manufactured. Dry-Cleanse 3-Ply Filters are unlike any other filter you will find. The interior wire frame allows the FULL surface of the filter to do what it is supposed to do; STOP dirt, dander, pollen, and other microbial particle. The filters fit tight into the filter rack guaranteeing nothing gets around the filter as is common with framed filters. With the layer design the Dry-Cleanse 3-Ply Filters can offer a service life up to 300% longer than traditional HVAC filters. The result is the best protection for your equipment and the cleanest air your space has ever experienced while saving money.