Designed for general air filtration applications with light to medium dust loading conditions, Disposable panel filters are engineered for sturdy, economical performance and ease of use, Constructed with a strong, chipboard frame bonded to AAF manufactured premium grade fiberglass media, Used in all types of HVAC systems to protect the coils from dirt, Also used as prefilters to extend the life of higher efficiency filters, 16"" x 20"" x 2"", Length: 16, Width: 2, Height: 20 SKU: JNSN35251