Flanders Pre Pleat 40 LPD 20" x 24" x 2" - Pleated Disposable MERV 8 Air Filter (12-Pack) Contains twelve (12) filters (Oversized Package, Increased Shipping Costs). Ecologically friendly filtration medium frame componets made from recyclable materials. Expanded metal grid prevents media flutter while in operation. Great frame strength due to diagonal & horizontal support members as well as wire-backed media. Media maximixing V-pleat design. Filter media pack is sealed to eliminate air bypass.