21x23_1/2x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack meters-&-solutions these durable shoe covers offer

these durable shoe covers offer the traction you need to get things done without slipping

Beam angle: 170°

simple and beautiful

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Darkling Beetles

21x23_1/2x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack meters-&-solutions these durable shoe covers offerNordic Pure Custom MERV 14 Plus Carbon air filters are made based on the actual measurements so be sure to measure your current filter to get the EXACT dimensions before ordering. As with all Nordic Pure filters, the effective life of your filter depends on the environment in which you live. We recommend changing 1 and 2 filters every 30 90 days. Our 4, 5 and 6 inch thick filters could last up to 6 months. EXACT MEASUREMENT: Furnace and air condition