The roof inlet EKO-TDH is designed for the installation of double roof hoods. As standard, EKO-TDH features 50 mm insulation on the inside corresponding to fire class EI30. Alternatively, the roof inlet EKO-TDH can be manufactured with 100 mm insulation corresponding to fire class EI60. Additionally, EKO-TDH comes with an internal surface featuring perforated sheet steel as standard.