The Fram filter fits pretty good, but not sure it would stay there all the time, so I put a little super glue in places and also used a clear silicon caulk all the way around filter (it is white until it dries). I would really like a grate that would go over this, any ideas. I was going to do black duct tape, but it doesn’t stick very well to the plastic. Other ideas?
Also, how often are people finding they have to change the pre-filter? I live in WI and the conditions are generally not too dusty, I will intentionally not follow people that close.