Coated internal wiring for long life. Polypropylene cones and UV stabilized plastic grills stand up to harsh marine effects. Heavy-duty ABS plastic frames. Low magnetic field does not interfere with compass and autopilot.
| Brand | Poly-Planar |
| OD | 5-1/4" |
| Box | 1 pr |
| Color | White |
| Hole | 4-1/16" |
| Size | 4" |