3M Filtrete 20 In. x 25 In. x 4 In. (Slim Fit) Allergen, Bacteria & Virus 1550 MPR Deep Pleat Furnace Filter Black Widow Uses TRA700 Series or Arrow

Uses TRA700 Series or Arrow T50 Staples from 1/4 In

Belt clip on back of chrome case

at a uniform thickness

QUIK-LOK Universal keyless blade clamp

Made from extruded aluminum for maximum durability and low maintenance service

3M Filtrete 20 In. x 25 In. x 4 In. (Slim Fit) Allergen, Bacteria & Virus 1550 MPR Deep Pleat Furnace Filter Black Widow Uses TRA700 Series or ArrowFiltrete high performance filters are effective at attracting and capturing 97% of large airborne allergens like pollen, mold spores, and dust mite debris. Captures microscopic allergens like dust, smoke and smog particles. Electrostatically charged filters. Includes a filter change reminder sticker. Lasts up to 12 months. Purple label.