ALT-4 / 4" Tall Adjustable Arm with Lift and Turn Base

Special Order Item 
4-inch tall arm with the lift & turn base, 360 degrees rotation every 18 degrees, 6 locking positions up & down in 90 degrees with stainless steel plunger assembly.

The base plate of the mount can be used with the thumb screws in the track as shown or you can use the four corner drilled and countersunk holes and can be hard mounted.
Top plates fit hole pattern for Downeast model S-17 flat mount.

An optional 3'' x 4'' subplate (ECMP-4) can be purchased to mount first to your boat and then this standard plate will mount to the subplate and allow easy removal by the four corner screws.

****S-17 model sold with ALT-4-S17