21x27x1 Trane Replacement MERV 7 Plus Carbon AC Furnace Filters 6 Pack Lighting and root development

and root development

RAW® Classic Single Wide size rolling paper with a double feed window

Many insects and diseases are killed on contact with one application

When they land on the upward slanted louvers

To make installation even easier

21x27x1 Trane Replacement MERV 7 Plus Carbon AC Furnace Filters 6 Pack Lighting and root developmentNordic Pure Trane Replacement MERV 7 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