12 Stainless Steel Passive Radar Reflector by Echomax The EM12 is a passive radar reflector once opened the radar reflector becomes a 12in ball It is supplied as a flat pack with a handled bag for quick assembly and immediate use The RORC recommend a mounting height of 4 meters 13ft above sea level or on small craft as high as possible mount in the catch rain position with the open corners facing the horizon Mounting heights of 1035 feet will give an approximate radar response between 47 nautical miles Echomax outperforms ALL other radar reflectors in real world conditions Every model and size is certified to perform to spec and outperform the competition Features. Engineered to high standards. Highgrade design delivers extended lifespan. Made with premium materialsSpecifications. Length 13 in. Width 025 in. Height 13 in. Size 12 in. Weight 2 lbs