I have a question about filters and Merv ratings.
I have been using a Merv 8 filter. The filter box installed actually holds a 4" filter not 5" which is more common to find. The only 4" filter I can find is a Merv 8 rating. (filter size is 20x24x4)
Here is my question...can I use 2 - 2" Merv 11 filters? This would also actually help me out in another way in that the filter box is in a tight area and it is challenging to jimmy in the 4" filter.
Thanks for thoughts on this.