Mounting Template and Dimensions for Humminbird Helix 12" in dash and flush mount.

This is the mounting template for the Humminbird Helix 12 G2 or Helix 12 G3. It shows you what size hole you need to cut when flush mounting in the dash the Helix 12. 

In dash mounting template for Helix 12 G3, Helix 12 G2, Helix 12 G2N.