13x23x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack growing-accessories The 2' T5 lamp emits

The 2' T5 lamp emits full-spectrum light

Operating Pressure: 4

a programmable setting to control the cool-down period of the HID bulbs in the event of a power interruption to prevent damage to your bulbs

NPK: 17-42-0

all of which provide high performance

13x23x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack growing-accessories The 2' T5 lamp emitsNordic 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