Koch Filter 102 500 027 MULTI PLEAT XL11 HC 4" High Capacity MERV 11 Pleated Panel Filter Size 18x24x4 103L N2 Dräger C C440 K2 PTT Kenwood NX 200 300 Dräger C C440 K2 PTT Kenwood NX 200 300 carbon dioxide and oxygen Multi Pleat XL11 Construction The Multi Pleat XL11 carries a MERV 11 fractional efficiency rating in accordance with ASHRAE Test Standard 52
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