21x27x1 Trane Replacement MERV 10 Plus Carbon AC Furnace Filters 6 Pack chillers-heaters-and-purification Indicator lights

Indicator lights

Total micronutrient complex

The Active Air Heavy Duty 18" Pedestal Fan provides superior air circulation with excellent durability

It is also a potent insect repellent

Green Planet Feed Programs take into account the extra PPM

21x27x1 Trane Replacement MERV 10 Plus Carbon AC Furnace Filters 6 Pack chillers-heaters-and-purification Indicator lightsNordic Pure Trane Replacement MERV 10 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