21x27x1 Trane Replacement MERV 8 Plus Carbon AC Furnace Filters 6 Pack PPE Treat your plants with care

Treat your plants with care that comes directly from another leafy source

The sensor is stable and made of a long-life silicon photo diode

Both does both functions—on delay and overtemperature protection

Working Environment:            Temperature 32-122°F

Perfect for large garden installations

21x27x1 Trane Replacement MERV 8 Plus Carbon AC Furnace Filters 6 Pack PPE Treat your plants with careNordic Pure Trane Replacement MERV 8 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