The Trilogy RTA is a postless 30mm RTA that gives you the vape quality alike the Asgard RDA! The deck brings four 2.5mm x 3.0mm individual post holes for easy coil installation with a massive airflow slot of 7.8mm x 6.4mm to capture all vapor in the reduced chamber. HOWEVER - don't be fooled by how it looks, the Trilogy RTA has a deceptive trick of creating negative pressure underneath the build deck, one that uses dual airflow diffusion and multi-chamber diffusion to create a negative pressure before the airflow ever hits the coils - giving a smooth silent vape that is only matched to an Asgard or Asgard mini RDA. It truly gives unmatched flavour to any VC RTA previously, one that rivals most RDAs! This is most certainly a MUST HAVE for anyone that is looking for great flavor and great vape quality without the hassle of dripping every so often.