28x28x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack Nutriants This is approximately six fans

This is approximately six fans but please note that some models contains more than one fan

low frequency ballast is side mounted

• Prefilter: Yes

They're washable

Gross Weight: 16

28x28x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack Nutriants This is approximately six fansNordic 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