13x21x1 Exact MERV 7 Plus Carbon AC Furnace Filters 12 Pack house and amp the monitor is simple to

the monitor is simple to install and can be placed above the sample to be tested

Solenoid for Hydrofarm's Active Air COSYS and COSYS20

more cost-effective compared with other same type lights

Using the SPH-1 allows for a "clean" installation and eliminates the need for daisy-chain Y-splitters to be used to interconnect multiple modules or sensors

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