Horizon Duos Sub-Ohm Tank The Horizon Duos Sub-Ohm Tank is built off of the Duos RDTA platform, presenting a 26mm diameter chassis, a threadless top fill system, and the new Horizon Duos Sub Coil Family. Measuring 26mm at the widest point, the Horizon Duos Sub-Ohm Tank features a striking and aggressive design language with colored tank sections and knurling. The top fill system is implemented with a threadless design that locks into and out of place with a simple twist of the top cap. Removing the top cap reveals a large seal with a wide angle fill port that allows for simple and efficient filling of the 5.0 milliliter tank reservoir. The Horizon Duos Sub-Ohm Tank introduces Horizon's new Duos Sub Coil Family and includes the 0.3 ohm Tiger Coil and the 0.2 ohm Quad Coil rated for 80 to 100W each. Each coil features a wide body chassis, vertical coil orientation, and quad wicking ports to ensure rapid wicking. Airflow enters the Horizon Duos Sub-Ohm Tank through dual 11mm by 3mm airslots that can be adjusted with the knurled AFC ring and closed entirely. Offering a robust and stylish midwattage atomizer with wide support for TFV8 Cloud Beast coils as well as the new Duos Sub Coil Family, the Horizon Duos Sub-Ohm Tank is an versatile platform at an affordable price point.