Geek Vape offers you two varieties of the Griffin 25 RTA, this top airflow version allowing for a larger 17mm build deck which can accommodate bigger builds such as a Clapton. This also gives users the option of a ceramic block for a single coil or dual coil with 6ml capacity for e-liquid. The travel-to-the-coil structure, only available in this version, also creates a larger tank than the standard version. This version is for cloud chasers and builders who desire more airflow.