Can I Use a 1-Inch Furnace Filter Instead of 4-Inch?

Any Household HVAC System $ 15 in stock at Fitchburg, MA Aisle 13, Bay 14, Slot 80 True Blue 116201 Air Filter, 20 in L, 16 in W, 2 MERV Add SKU:

The 16x25x1 filter normally drops into a slot in the short horizontal run between the air intake downward duct and the furnace itself There

furnace filter slot cover 5” furnace filters should be replaced every 9-12 months The thickness of your furnace filter is dictated by your air handler and furnace's filter slot You can

difference between slot drill and end mill I just had the air intake on my furnace expanded, but they didn't update the filter slot Is it acceptable for a forced air furnace filter to