11x32_1/2x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack LED Lighting The only lighting controllers featuring

The only lighting controllers featuring industrial-grade ballast relays

- On/Off Trigger with convenient "on" lock

• Ultra light in weight

Make Defguard part of your all-natural protection plan

The FloraFlex® shut off valve also allows you to control the pressure of water and nutrients being delivered through the manifold to your plants

11x32_1/2x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack LED Lighting The only lighting controllers featuringNordic 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