Purolator 5038901040 F312 Std1 Fiberglass Disposable Throwaway Panel Filter 16w X 30h X 1d - Lot of 12 Fiberglass Size: 16" x 30" x 1" UL Class 2 Panel filter utilizing the purolator monobond concept of a one-piece frame sealed to the media using heat and pressure Fiberglass media is evenly coated with a gel adhesive to prevent finer particle migration