16_1/4x21_1/4x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack Ventilation/Air Conditioning HTB-2-N provides easy tying of

HTB-2-N provides easy tying of plants to support stakes & lines to give plants that desirable uniform appearance

and other debris

A powerful blend of all natural ingredients & 29 different strains of mycorrhizae & beneficial microbes designed for today’s demanding “High Performance Gardening

handheld operation while taking PPFD measurements & ongoing data logging during power outages

16_1/4x21_1/4x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack Ventilation/Air Conditioning HTB-2-N provides easy tying ofNordic Pure Custom 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 condition