28x36x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack New-releases These new air cleanliness guidelines

These new air cleanliness guidelines include two major changes:

Size: 22"x14"

PE=Polyethylene

Mix BLUE with SUPER HPS start to finish: Multi-light systems can combine our HORTILUXTM BLUE along with HORTILUXTM Super HPS lamps for a more balanced spectrum to produce higher yields and quality of plant growth throughout all phases of plant growth

28x36x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack New-releases These new air cleanliness guidelinesNordic 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