Product Description PP4101 PowerPod Precut for One Instrument (3.6" / 110mm hole)NavPod Protects Your Electronics From Harsh ConditionsThe PP4101 PowerPod is precut for the following:Raymarine i70 Raymarine ST60Garmin GMI10Garmin GMI20Garmin GHC20Furuno F150Furuno FI70Simrad IS20This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.