Filtrete 20 In. x 25 In. x 4 In. 1000 MPR Allergen Defense Deep Pleat Furnace Filter, MERV 11 Pack options:Pack of 1 Heating element cycles on and

Heating element cycles on and off to maintain the set temperature

Specifically designed to remove old deck boards

small trim

coarse diamond

(1) accessory storage box

Filtrete 20 In. x 25 In. x 4 In. 1000 MPR Allergen Defense Deep Pleat Furnace Filter, MERV 11 Pack options:Pack of 1 Heating element cycles on andOpt for a Filtrete Allergen DefenseAir Filter to transform your central heating and cooling system into a whole home air filtration operation. This no nonsense filter helps capture varying sizes of particles, from the large (lint, pollen, dust and pet dander) to the microscopic (smoke and smog). %search_data%NADP03 4IN 4