Pleated Furnace Filter, Ultra Allergen Reduction, 3-Month, Purple, 20x25x4-In. Security Products Width: 4-1/8"

Width: 4-1/8"

Safe Working Load of 90 lbs

Designed To Join 2 Pieces Of National's #5114 Or #5116 Box Rail

integrated strike reinforcer with 3 in screws to help protect against forced entry

Pleated Furnace Filter, Ultra Allergen Reduction, 3-Month, Purple, 20x25x4-In. Security Products Width: 4-1/8"The 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".