How is the charcoal filter supposed to fit above the grease filter?
Answer Lucy, please see the following link to view a copy of your owners manual. Refer to page 13 for the filter replacements. Thanks! https://www.whirlpool.com/digitalassets/MLPDF/Use%20and%20Care%20Guide%20-%208185379.pdf
When ordering the grease filter, do I order 2 or are they in a set of 2?
Answer Hello Wayne, the grease filter 6802A is a quantity of one. Order as many as you need. Thanks!