16x21_1/2x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack bloom nutrients Fill cap is located on

Fill cap is located on the very top middle of the water tank

and top performance

This system focuses 20% more of the light to the target area than our nearest competitor to enhance the performance of the lamp and maximize plant quality and yield

Pyrex glass tube

16x21_1/2x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack bloom nutrients Fill cap is located onNordic Pure Custom MERV 8 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