21_1/2x23_5/16x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack trays Available in many sizes (5L)

Available in many sizes (5L) (10L) (20L) this bag helps you keep your possessions safe and secure

Suitable for airstream temperatures up to 140°F (60°C)

which are used to offset plant stretch induced by the sun’s far red radiation

- Cylindrocladium

21_1/2x23_5/16x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack trays Available in many sizes (5L)Nordic Pure Custom MERV 12 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