13_1/4x13_1/4x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Tents / Indoor Greenhouses Allows greater flexibility and more

Allows greater flexibility and more choices in lighting design

it will never leave you short

Flushing adds considerable life to the membrane as well

Interchangeable telescopic aluminum handle

The FloraFlex® Tubing is a flexible premium vinyl

13_1/4x13_1/4x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Tents / Indoor Greenhouses Allows greater flexibility and moreNordic 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