25x18x1
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Koch 102-081-011 – 25x18x1 Extended Surface Pleated Air Filter, MERV 11
$236.28 per 12 pcs ($19.69 each) -
25x18x1 Pleated Air Filter – Semi, Multi-Pleat, XL8, Koch 102-041-011
$159.96 per 12 pcs ($13.33 each) -
25x18x1 High-Capacity Multi-Pleat Air Filter – XL8, Koch 102-031-011
$179.88 per 12 pcs ($14.99 each)