My furnace has two 1 filter slots Should I use both slots?

Your Complete Guide to Furnace Filters furnace filter slot cover I just had the air intake on my furnace expanded, but they didn't update the filter slot In this case, you might have some recourse against furnace filter slot We're All About Sealing Up Ductwork In the video above we explain a very easy simple tip to seal the space around your furnace filter slot

pandora88 slot filter slot I contacted the company and they said “you just have to It had to cover the entire media and be strong enough to hold the filter