29x35x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Hydro Systems it provides a higher level

it provides a higher level of drainage and air-filled pore space than 25% perlite

leaving the food grade lubricant behind

3570 (Lubricants with incidental food contact)

and the cushion-shock absorber - non-slip coating

29x35x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Hydro Systems it provides a higher levelNordic 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