Installation of rectangular, classified E. Klink ducts 13 Vertical floor penetration • Backstop: Fire insulation mat, e.g. Rockwool EI 30 Conlit Fire Mat (≥ 70 kg/m³). • Fire sealant: Rockwool Conlit Seal 800. • Sectional steel is installed to secure the duct. • Gebhardt ø16 mm stiffener. • Stiffeners are placed in the middle of the wall. • Correct number and distance between stiffeners is determined based on duct size. • Gap width 20 mm. Gap depth 10-15 mm.
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