Pleated Furnace Filter, Ultra Allergen Reduction, 3-Month, Purple, 20x25x4-In. Airjet It is approved for potable

It is approved for potable hot and cold water supply systems in all model plumbing and mechanical codes across the United States including California and Canada

1/2" male iron pipe

including utility trailers

Roller: 3/8-1/2 inch nap

Pleated Furnace Filter, Ultra Allergen Reduction, 3-Month, Purple, 20x25x4-In. Airjet It is approved for potableThe Filtrete, 20" x 25" x 4", Allergen Reduction Filter, 3 Month Filter, For Housing Units Accommodating 4 " Nominal Size Filters & Is For Residential Use, Electrostatically Charged, Attracts & Captures Particles Like Pollen, Mold Spores, & Dust Mite Debris, MPR Rating 1550, Last Up To 12 Months. Actual size: 19 3 4" x 24 7 16" x 4 3 16".