The following are MERV 8, high capacity filters that have been approved by Mesa Public Schools: • Flanders, Pre-Pleat 40, Merv 8, high capacity filter • Purolator, Merv 8, Defiant Mark80D, DMK80, high capacity filter • Glasfloss, Merv 8, Z-Line series MR-8, high performance pleat filter. All air filters shall be nominal 1”, 2”, and 4” thickness, pleated design, disposable type, high capacity pleat count. The media should be made of continuous synthetic and hydrophobic fibers that are thermally bonded and absent of any chemical binders. Filter should be rated a minimum of MERV 8 according to the ASHRAE 52.2 test and an average arrestance of not less than 90%. Passing particle size should be 3 microns or less. The filters should be listed by underwriters’ laboratories as class 2.
