Restricted direct lung — a middle ground between MTL and open DL.
RDL is a common label on modern pods and AIOs. It usually means more airflow than MTL but less than a wide-bore DL tank.
When this matters
RDL labels on pods often mean a slightly airier draw than MTL — still read the ohm band before you max watts.
WINDBAR tools for this term
Related terms
RDL questions
How is RDL different from MTL?
RDL allows more airflow and power than tight MTL but less than wide-open DL. Many modern pods are labeled RDL as a middle setting.
What wattage band fits RDL?
Use the coil print first. The wattage calculator's RDL mode is an educational midpoint between MTL and DL starting points.
Educational glossary for adults 21+ only. Not medical advice. Follow manufacturer instructions and local laws.