17_1/4x19_1/4x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack Plant Care/Pest & Disease Control These pH testers work with

These pH testers work with Oakton's line of 10

Active Aqua’s freon-free chillers are environmentally friendly (they use R410a refrigerant) and are ideal for keeping the nutrient solution in your reservoir at the perfect temperature

4pcs each per HCS-3

CO2 Device Stations: Max

The CenturionPro Original comes with a strong 3 horsepower leaf collector that runs on 220 volts

17_1/4x19_1/4x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack Plant Care/Pest & Disease Control These pH testers work withNordic Pure Custom 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 condition