21_1/2x23_5/16x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack leds The Grower's Choice 10K bulb

The Grower's Choice 10K bulb is for growers who are looking to maximize yield and resin production

• Large 3-color backlit screen gives you clear information• Durable structure

iPonic Commercial Controller - iPonic614 Single Zone

• Works on contact and is also absorbed into the plant

Duct Size: 4” | Dimensions: 6

21_1/2x23_5/16x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack leds The Grower's Choice 10K bulbNordic 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