17x29x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack king Sachets have a different shipment

Sachets have a different shipment schedule and processing time than other sizes

Keep better track of usage hours

User controllable tumbler speed

Potassium and

It's active ingredients then cause disruption of respiration and digestion

17x29x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack king Sachets have a different shipmentNordic 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