Home Slickdeals Filtrete Allergen Defense Micro Particle Reduction HVAC Furnace Air Filter, 800 MPR,... Slickdeals Filtrete Allergen Defense Micro Particle Reduction HVAC Furnace Air Filter, 800 MPR, Pack of 3 Filters. $15.88 + Tax, Free Store Pickup. By ARCOM - 14 November 2017 229 0 SHARE Facebook Twitter Go to the deal page: Filtrete Allergen Defense Micro Particle Reduction HVAC Furnace Air Filter, 800 MPR, Pack of 3 Filters. $15.88 + Tax, Free Store Pickup.