21x23_1/4x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack Grow Light Bulbs Use the included mounting bar

Use the included mounting bar to place it on any open wall space or install caster wheels to set it on the floor

Customizable grow data charts

FIFRA 25(b) exempt

then tuck away safely for storage or transport

Easy to install and operate

21x23_1/4x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack Grow Light Bulbs Use the included mounting barNordic Pure Custom MERV 14 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