For regular use, we are not recommended with grille, because it will affect the power of the thruster.
The thruster adopts ROVMAKER self-developed open motor, which has a long service life, good pressure resistance, and corrosion resistance. Compared with other same-level motors, it has more outstanding efficiency. The motor uses sliding bearings, and the bearings are made of special polymer materials, which have outstanding performances such as low friction, corrosion resistance, and self-lubrication. If you compared this special thruster with traditional metal bearings or ordinary plastic bearings, you will find it has lower maintenance costs and is suitable for a wider range of waters.