UC-H89 Display Cover for HELIX® 8/9 G3 
This black silicone unit cover for HELIX 8 G3N and HELIX 9 G3N Series units will help keep your screen clear of debris and help prevent accidental damage to your HELIX unit. 
Features:

Compatible Fish Finders: HELIX 8 G3N Series – All models, HELIX 9 G3N Series – All models
Not for use while trailering your boat