Since 2015, Wood Waste Control now manufature the FB 4 unit is one piece. The old model would have a standalone fan which was bolted on the side. The new version, works more efficient, easier to construct and helps reduce the maintenance required on the older model.
Each unit is supplied with 4 cloth filter bags, a pack of 25 polythene collection bags and D.O.L or A.S.D start / Stop controller.
We do not recommend the use of these types of units when using very fine dust, even with fine dust filter cartridges attached. This is due to the high risk of explosions that could potentially happen. These type of units have no safe panels or cladding to protect the users. We recommend our FD type of filter for fine dust.1