Created to provide higher efficiency and better overall performance than standard pleated filters. Item represents 3 filters that will last up to 3-month, per filter, in a typical. Works in furnaces, HVACs, wall vents and ceiling vents.
i looked all over and prices for filters are NUTS! These satisfied my needs, shipped quickly and appear to be of value. NOT Best deal $4$, if you live near a HD, cheaper at store