||This recall involves 3M air purifiers branded Filtrete. The air purifiers are white, made of plastic and plug into the wall. They measure about 19 inches tall by 8 inches wide with a 13 inch tall by 4.5 inch wide air filter. They have a two-speed fan knob with Filtrete embossed on the top. The two recalled models are Ultra Quiet, number FAP00-RS, and Maximum Allergen, number FAP00-L, which was sold only at Lowe's stores. The products serial numbers begin with E, F, G, H, I or J and the model and serial numbers are located on the bottom of the product.