12_3/4x20_3/4x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack featured onion and corn harvest knife

onion and corn harvest knife with an 11-inch stainless steel straight edge blade and textured non-slip orange handle is ideal for chopping through vines

making it a major mineral needed for blooming and flowering varieties of plants

and all necessary mounting hardware is included

heavy duty aluminum

Make those LED or HID grow lights work better for you and your crop

12_3/4x20_3/4x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack featured onion and corn harvest knifeNordic Pure Custom MERV 13 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