1" Furnace Filters Canada
One inch furnace filters measure 3/4" wide as is standard in Canada.
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Available in many sizes listed below (16x25x1, 20x25x1, 16x16x1 and more)
Different qualities for more or less effectiveness as per the MERV rating system:
Throwaway, MERV 8, MERV 10, MERV 11, MERV 13 and Carbon odour control.
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