Both the FB150 and FB250 come standard in a 29.9 x 27.7cm (11.8 x 10.9 inch) radome, while the FB500 comes standard in a 70x72cm (27.6×28.3 inch) i6 radome. Empty matching domes are available for both sizes to help create the symmetrical look of a “dual antenna” installation. Additionally the FB antennas can be mounted inside of larger radomes (for example: FB250 inside an i4 Radome) to match other Intellian installations.