Standard Filters (MERV 11): These filters can be vacuum cleaned on a regular basis. However, they should be replaced about every 6 months.
High Efficiency Filters (MERV 14): This optional external deep pleated 95% media filter and required filter housing are available for optimum air filtration and to reduce potentially harmful airborne particles. If the optional filter is added, the standard filter operates as a prefilter. These filters can be vacuum cleaned on a regular basis. Because it is a secondary filter to the standard MERV 11 filter, you should replace it every 2–3 years. How often you need to replace your filter(s) will vary by application.
4036695- 70H & 98H ONLY!!! When space is tight, and you need that extra room in your crawlspace or basement, you can suspend the Ultra-Aire 70H or 98H from above with this Hang Kit.