Flanders Ez Flow Merv 4 Flat-Panel Fiberglass Air Filter, 20X25X1 In., 12 Per Case Protect your equipment and improve the air quality indoors with Flanders EZ Flow Merv 4 Flat-Panel Fiberglass Air Filter. The filtering medium consists of a continuous filament spun glass encased in a single-construction piece of chipboard to prevent the corners from separating. It captures household dust, debris and lint for up to 30 days before it needs replacement. The Flanders air filter also features a metal retainer on the down stream for added support. It's available in a convenient 12-count package.. Flanders EZ Flow Merv 4 Flat-Panel Fiberglass Air Filter, 20" x 25" x 1", 12 per Case: Standard-grade 20" x 25" x 1" air filter Filtering medium contains continuous filament spun glass 1-piece frame for improved resistance to wear Includes a metal retainer for added support Protects against dust, debris and lint UL Class II Disposable; replace every 30 days Manufacturer's part number: GID-
