17_1/2x23_1/2x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Grow Light Reflectors Pulse is always with you:

Pulse is always with you: Handheld

First umbrella-type reflectorCompatible with HPS and CFL lamps (600W max)Security with thermal protection+40% light efficiency compared to standard reflectors (1800 µmol/m²/s)Can be set closer to plants without over heatingVoltage 400VPower 600W

Minimal stretching

The spectral flexibility alone is worth the investment — we switched from PhysioSpec to AnthoSpec mid-cycle and saw a noticeable improvement in color development

17_1/2x23_1/2x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Grow Light Reflectors Pulse is always with you:Nordic Pure Custom MERV 12 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