20_1/2x25_1/2x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack double-ended Proprietary bi-laminate fabric protects against

Proprietary bi-laminate fabric protects against flames and chemicals

Reduce transplant shock

or intracanopy setup

"We've been running RAY44s as intracanopy lights in our greenhouse for two seasons now

It contains both the IBA and NAA hormones in a water soluble form

20_1/2x25_1/2x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack double-ended Proprietary bi-laminate fabric protects againstNordic 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