We have learned that in some cases, filter shrinkage has prevented  good filter fit. Shrinkage occurs over a long period. Shrinkage also occurs during filter restoration in a dishwasher. This filter is designed to be renewable in a dishwasher without damage to the filter or the dishwasher. Place open end down.

So, we have developed an adaptor ring that may be fitted over the filter to restore perfect filter fit into the filter holder to allow reuse of the filter for a perfect fit.

This adaptor kit also includes a hurricane sealer plate for extreme weather.

Type III Fresh Air Filter, MERV 14-15, Factory Made

This MERV 14-15 filter will remove about 95% of nearly everything: viruses, bacteria, pollen,  mold spores, wildfire smoke, PM2.5, soot, radioactive particles, red tide and blue green algae neurotoxins, Valley Fever Spores, agricultural chemical aerosols. FILTER LIFE?  Usually 12-24 months. Quick, easy service. A simple replacement for homemade, high maintenance air intake filters that need service every 60-90 days. Compare with home-made blue polyester fluff material and with black/blue bonded hog's hair filter material filters

How are you going to know to call the mitigator for a warranty repair? What is a warranty worth if there is no reliable and easily-recognized warning of system failure during the warranty period? Fast, Accurate results on a digital display for both short term and long term radon monitoring and record keeping. This instrument delivers an audible warning if the fresh air/radon mitigation fails or declines in performance. An audible warning is especially important to give value to a radon mitigation warranty.  Compare with the silent and usually concealed blue or red oil-filled U-tube manometer that is almost always in an out of sight location, usually at the far end of a closet and out of sight.