Fire damper lindab | fire dampers WH25 Technical data Fire Batt (Weichschott) sealings Rigid wall Flexible wall EI 120 S EI 90 S (300 Pa) (300 Pa) EI 120 – S Installation within rigid vertical wall with Fire Batt (Weichschott) sealing Wall min. thickness 100 mm Wall min. density 550 kg/m³ Rock wool 140kg/m³ and endothermic varnish sealing ve (i ↔ o) Wet sealing method Ø min 100 max 315 Ø min 100 max 315 Min. distance allowed between 2 dampers 200 mm 50 mm EI 120 – S Installation within vertical light wall (plasterboard) with Fire Batt (Weichschott) sealing Wall min. thickness 100 mm Wall rock wool min. density 80 kg/m 3 Rock wool 140kg/m³ and endothermic varnish sealing ve (i ↔ o) Wet sealing method Ø min 100 max 315 Ø min 100 max 315 Min. distance allowed between 2 dampers 200 mm 50 mm EI 120 – S Installation within vertical light wall (gypsum blocks) with Fire Batt (Weichschott) sealing Wall min. thickness 100 mm Wall min. density 995 kg/m³ Rock wool 140kg/m³ and endothermic varnish sealing ve (i ↔ o) Wet sealing method Ø min 100 max 315 Ø min 100 max 315 Min. distance allowed between 2 dampers 200 mm 50 mm EI 90 – S Installation within floor and Fire Batt (Weichschott) sealing Floor minimum thickness 150 mm Floor minimum density 650 kg/m³ Rock wool 140 kg/m³ and endothermic varnish sealing ho (i ↔ o) Wet sealing method Ø min 100 max 315 Min. distance allowed between 2 dampers - 200 mm EI 60 S (300 Pa) Ø min 100 max 315 50 mm Ø min 100 max 315 50 mm Ø min 100 max 315 50 mm Ø min 100 max 315 200 mm Floor a×b nominal dimensions of damper ve vertical installation ho horizontal installation (i ↔ o) origin of fire is irrelevant Pa negative pressure E integrity I thermal insulation S smoke seal We reserve the right to make changes without prior notice 3 2017-08-16
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