The Active Grow 40-watt LED 2 tube 4’ fixture is an easy to install grow light that features spectrums formulated specifically for plant growth, increased PPF output and lower power consumption. You can link together up to 5 of these fixtures end-to-end to create a seamless row of uniform light. Fixtures are suitable for use in commercial vertical farm or home grow racking systems for herb gardens, microgreens, cannabis cloning, germination and tissue culture applications. Fixture uses 60% less energy than traditional T8 fluorescent lights and can save up to $300 over the course of the product’s lifetime. The Sun White Wide Spectrum mimics natural sunlight conditions with a high CRI of 95. 40,000 hour lifetime. Tubes are built into the fixture and not replaceable.