Washable Furnace Filter Canada - 1" in all sizes Size:20x25 Williamson Power 400-13

Williamson Power 400-13

bacteria and odors

OUR PART # M11-M2

trapping airborne contaminants like dust

Replace annually for peak performance

Washable Furnace Filter Canada - 1" in all sizes Size:20x25 Williamson Power 400-13WASHABLE FILTER FOR FURNACE CANADA Available in the following sizes: (Inches) Standard sizes listed have a nominal thickness of 1" (7 8" actual) and are undersized by 3 8" in both dimensions, as is industry standard. 16x24x1 ; 16x25x1 ; 18x24x1 ; 20x20x1 ; 20x25x1 Custom sizes are available up to 1250 square inches (maximum length is 25)*Choose Other and enter EXACT size required at checkout NOTE for lengths over 25 order 2 filters to be used combined