Base Unit Common to both Ranger® models, the base is constructed with a frame of sturdy wire and threaded rod. It is covered with our highest quality fabric and features a horizontal double-slider zip for easy access. It can be ground tethered or hung. Central Cone Made of strong, light-impervious cotton, the Capio cone features straps which can be used to mount actinic tubes horizontally across the cone and 22 watt ring tubes horizontally or vertically.