1.Primary air intake
2.Secondary air intake (clean burning system)
3.Airwash system
4.External Riddling system
5.Convection
6.Radiation
7.Fire down in second
8.Ashpan under bottom grate
9.Easy Cleaning
10.Heat Effciency: 78-85%
Please let me know freely if there is anything we could do for you. Thanks for your time !