17x29x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack books-&-videos blades lock closed with a

blades lock closed with a safety hook when not in use

These include open-style and wing-type reflectors

fast-acting

Use Portable Mini Greenhouses and Cloches To Save Money The purchase of a full sized greenhouse is undoubtedly a very large financial investment but we offer a number of less expensive alternatives to help with the whole process of propagating your seeds

17x29x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack books-&-videos blades lock closed with aNordic Pure Custom MERV 7 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