Duo-Pak 40 filters are designed for applications where long service life with a medium efficiency filter is required. The Duo-Pak 40, 1 ply configuration, which utilizes a tackified single density polyester media, offers an economical alternative for applications where high dust holding capacity in a primary filter is required. The self-sealing feature of the Duo-Pak 40 prevents air bypass and eliminates the need for clips; saving time and money during change-outs. The longer service life and low cost make the Duo-Pak 40 an ideal replacement for four-inch, or six-inch pleat applications where holding frames, or flat bank side access housings are in use. Size in Inch (HxWxD) – 24x24x15
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