i think dynamics are Merv 14 and just 1"
Usually whe installing a downflow furnace it is in a tight closet with not that much room. When we put in variable speed furnaces we like to put in a hi-Eff media filter maybe Aprilaire 2210. Lots of times they just won't fit or is too much work to rearrange humidifier or vent pipes. Anybody have any ideas for a good airfilter that would work on downflows.
i think dynamics are Merv 14 and just 1"
sorry merv 13
Infinity Air Purifier
On downflow, usually the 16x20 or 20x20 fit better than the 25".
Aprilaire makes a model that works with upflow/downflow. It's pricey.