Vostermans Varifan Variable Speed Drive 20 Amp w/ Manual Override (VSD-1MC-20) Propagation Tools & Accessories This is the 55-gallon size

This is the 55-gallon size

packed as eight retail boxes of 12 Shelf Life (overwrapped) 2 years from date of manufacture In-Use Life Typically 2–4 months RH Levels Offered 55%

Ultimate Vacuum: <500 µmHg / mTorr / micron

or 420 CFM for veg

and a full switch-off protects the room from 10-50 degrees C

Vostermans Varifan Variable Speed Drive 20 Amp w/ Manual Override (VSD-1MC-20) Propagation Tools & Accessories This is the 55-gallon sizeAvailable in three different models that have a 0 10 V or 4 20 mA input signal. This 20 Amp model has easy to access toggle switch to select manual or automatic mode as well as a manual speed selector dial on the faceplate. Internal minimum speed adjustment with the possibility to work continuously at minimum speed. Comes in a rugged, sealed enclosure that protects from light, moisture, and dust. Includes extended supply voltage range and a radio