Handua 16"W x 20"H [Duct Opening Size] Filter Included Steel Return Air Filter Grille [Removable Door] for 1" Filters, Vent Cover Grill, White, Outer Dimensions: 18 5/8"W X 22 5/8"H for 16x20 Opening : Appliances - Amazon.com
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filtr powietrza do kompresora sprężarki,filtr powietrza okrągły