20x20x4 (3 5/8) Pleated Air Filters MERV 14 Plus Carbon 6 Pack books-&-videos Details: Material is a combination

Details: Material is a combination of polyethylene and nylon

including "Brand F"

telescopic long reach lopper

RJ port + 0-10V Dimming knob；

20x20x4 (3 5/8) Pleated Air Filters MERV 14 Plus Carbon 6 Pack books-&-videos Details: Material is a combinationImportant Note: Almost ALL furnace filters have a different "actual size" than the nominal size printed on the air conditioner filter. It's best if you measure your air filter for the EXACT size and compare it to our "Actual Size" and then you can be sure your A C air filter fits! With the 4" and 5" air filters there is a wider variance between the nominal and actual size depending on the manufacturer. If you are replacing a 4 3 8 depth 20x20x4 filter