20x20x1 Fiberglass Air Filter – 30‑Day Disposable – 4 Pack (Model 10057.012020)

The 20x20x1 Fiberglass Air Filter 4‑Pack provides dependable, economical 30‑day filtration for residential HVAC systems. Designed with continuous filament spun‑glass media and a sturdy chipboard frame, these filters maintain strong airflow while capturing dust, lint, and large airborne particles. Ideal for homeowners who prioritize basic filtration and frequent replacement to support system efficiency, this filter pack delivers essential protection without restricting system performance.

With a nested 4‑filter configuration, storage is simplified and replacements are always within reach. These filters are well‑suited for furnaces, central air conditioners, and systems that require low-resistance airflow.