20x20_1/2x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Promote The peristaltic pump allows you

The peristaltic pump allows you to maintain the ideal pH values in your tank

Pack quantity is 8 pieces

so you can use it as often as you need to without worry

To feed aviary birds and reptiles

Keep a roll on hand for instant access to repairs

20x20_1/2x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Promote The peristaltic pump allows youNordic Pure Custom MERV 13 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