Transducer Shield Garmin GT36, GT40 or GT56 AP-DS-8.4 Armor Plate - An Armor Plate is designed to protect the transducer from side to side as well as front and back impact. An Armor Plate takes the place of the factory transom mounting bracket. If the Armor Plate is installed anywhere other than on the transom, for example on the set back wall, some shimming may be required if the angle needs to be adjusted. This product is designed to fit: Garmin DownVu/SideVu transducer GT36 # 010-13072-00 GT40 # 010-12220-00 GT56 # 010-13073-00 High Quality Aluminum Alloy; Black Powder Coated Stainless steel hardware; Do-It Yourself instructions;