21_1/4x23_1/4x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack garden-accessories Includes four pieces of 10-32

Includes four pieces of 10-32 screws

depending on the strain

Coveralls are designed with tunnelized elastic to contain particle shed and eliminate raw edges that may generate unwanted particulates

greenhouse ornamentals and vegetables

Spotlight tropical plants

21_1/4x23_1/4x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack garden-accessories Includes four pieces of 10-32Nordic 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