Home Dealnews 3M Filtrete Allergen Defense HVAC Filter 3pk for $18 + pickup at... Dealnews 3M Filtrete Allergen Defense HVAC Filter 3pk for $18 + pickup at Walmart By ARCOM - 11 February 2019 145 0 SHARE Facebook Twitter Go to the deal page: 3M Filtrete Allergen Defense HVAC Filter 3pk for $18 + pickup at Walmart