Imtra SM12013 Tunnel Aluminum 220 x 1000 x 10 millimeter | Sleipner SNEXTACC3 Molded body

Molded body

Can be adjusted for various pile diameters

Depth and fast-response water-temperature sensing

Press twice on the built in switch and the color switches to a Red LED night light

Imtra SM12013 Tunnel Aluminum 220 x 1000 x 10 millimeter | Sleipner SNEXTACC3 Molded bodyTunnel Selection The diameter of the tunnel will be determined by the model of bow thruster and its propeller diameter. Tunnel diameter refers to the internal diameter of the tube. The optimal tunnel length is between 2 and 4 times the tunnel diameter (measuring on the short [lower] side of the installed tunnel). Tunnels which are too short allow the propeller to cavitate which decreases performance and makes a lot of noise. Tunnels which are too long