Acoustic Ducting Size:4" so it bends round the

so it bends round the same tight corners and connects to the same clamps and fittings

It won't make a loud fan silent

The self-ballasted design means plug

or smaller to larger

Many growers use these alongside larger systems to boost light in dark corners or lower canopy areas

Acoustic Ducting Size:4" so it bends round theVortex Acoustic Ducting Insulated Ducting That Cuts Fan Noise Best for: growers running an inline extraction fan who need to quieten the system down without fitting a separate silencer box. Our thoughts If your grow room shares a wall with somewhere you actually sleep or live, standard ducting on a decent sized fan gets old fast. This swaps the noise problem out for a quieter hum without adding another box to your extraction line. It won't make a loud