20x24x2 (19.75 x 23.75 x 1.875) Accumulair Washable Sizeynthetic Filter

Synthetic 2 Inch Washable Filter.  This durable, long-life filter is made of 100% polyester washable media. The frame is made from sturdy, rust resistant aluminum channel. It has a low pressure-drop providing optimum air flow.80-85% Efficiency for particles of 3 to 10 microns in size. MERV 5 rated filter. Replace every 2-3 years. Vacuum or wash every 30 days. Great for use in boats and other marine applications. A perfect filter for swamp coolers and areas with high moisture.