Grease (and/or) Charcoal Filter for a Over The Counter Microwave

I bought a used Hotpoint rvm1435wd001.

It is missing (2 filters) on the bottom of the unit.

I see 2 part numbers:
AP2016554 (GE WB6X486) (Aluminum Grease Filter)

AP2027740 (GE WB2X9883) (Charcoal filter)

Links:
Part Details - GE Grease filter, part number: WB6X486
Part Search

Do I pick one OR the other (grease OR charcoal) ?..
or…
do they work together (aka, I should get both).

Thanks in advance.

This site is great for both part identification (the pdf’s), part price$, and getting help.
You made my bookmark list!

Keywords:
rvm1435 / rvm-1435 hotpoint microwave
out the counter
charcoal filter
grease filter
rvm1435wd001

You need the grease filters (2). The Charcoal filter is inside the air passage exhaust. Check to make sure that is installed too, but you only need it if the MV is not vented to the outside.